diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index 9c80e42e1b1..34895e1a30f 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -13,10 +13,11 @@ repos:
         additional_dependencies: [black==19.3b0]
         language_version: python3
 -   repo: https://github.com/pre-commit/pre-commit-hooks
-    rev: v2.1.0
+    rev: v2.2.2
     hooks:
     -   id: trailing-whitespace
     -   id: end-of-file-fixer
+    -   id: fix-encoding-pragma
     -   id: check-yaml
     -   id: debug-statements
         exclude: _pytest/debugging.py
diff --git a/bench/bench.py b/bench/bench.py
index 31cc7ac137c..468ef521957 100644
--- a/bench/bench.py
+++ b/bench/bench.py
@@ -1,3 +1,4 @@
+# -*- coding: utf-8 -*-
 import sys
 
 if __name__ == "__main__":
diff --git a/bench/bench_argcomplete.py b/bench/bench_argcomplete.py
index 335733df72b..297637bad0d 100644
--- a/bench/bench_argcomplete.py
+++ b/bench/bench_argcomplete.py
@@ -1,3 +1,4 @@
+# -*- coding: utf-8 -*-
 # 10000 iterations, just for relative comparison
 #                      2.7.5     3.3.2
 # FilesCompleter       75.1109   69.2116
diff --git a/bench/empty.py b/bench/empty.py
index 4e7371b6f80..bfda88235de 100644
--- a/bench/empty.py
+++ b/bench/empty.py
@@ -1,2 +1,3 @@
+# -*- coding: utf-8 -*-
 for i in range(1000):
     exec("def test_func_%d(): pass" % i)
diff --git a/bench/manyparam.py b/bench/manyparam.py
index 1226c73bd9c..c47e25f5182 100644
--- a/bench/manyparam.py
+++ b/bench/manyparam.py
@@ -1,3 +1,4 @@
+# -*- coding: utf-8 -*-
 import pytest
 
 
diff --git a/bench/skip.py b/bench/skip.py
index 2fc8240e565..29e03e54fc6 100644
--- a/bench/skip.py
+++ b/bench/skip.py
@@ -1,3 +1,4 @@
+# -*- coding: utf-8 -*-
 from six.moves import range
 
 import pytest
diff --git a/doc/en/_themes/flask_theme_support.py b/doc/en/_themes/flask_theme_support.py
index b107f2c892e..c5dcdbe2737 100644
--- a/doc/en/_themes/flask_theme_support.py
+++ b/doc/en/_themes/flask_theme_support.py
@@ -1,3 +1,4 @@
+# -*- coding: utf-8 -*-
 # flasky extensions.  flasky pygments style based on tango style
 from pygments.style import Style
 from pygments.token import Comment
diff --git a/doc/en/conftest.py b/doc/en/conftest.py
index 1a62e1b5df5..b51aae5b685 100644
--- a/doc/en/conftest.py
+++ b/doc/en/conftest.py
@@ -1 +1,2 @@
+# -*- coding: utf-8 -*-
 collect_ignore = ["conf.py"]
diff --git a/doc/en/example/assertion/failure_demo.py b/doc/en/example/assertion/failure_demo.py
index 5d36fa65924..ba910ef6a88 100644
--- a/doc/en/example/assertion/failure_demo.py
+++ b/doc/en/example/assertion/failure_demo.py
@@ -1,3 +1,4 @@
+# -*- coding: utf-8 -*-
 import _pytest._code
 import pytest
 from pytest import raises
diff --git a/doc/en/example/assertion/global_testmodule_config/conftest.py b/doc/en/example/assertion/global_testmodule_config/conftest.py
index da89047fe09..8e04ac2ac46 100644
--- a/doc/en/example/assertion/global_testmodule_config/conftest.py
+++ b/doc/en/example/assertion/global_testmodule_config/conftest.py
@@ -1,3 +1,4 @@
+# -*- coding: utf-8 -*-
 import py
 
 import pytest
diff --git a/doc/en/example/assertion/global_testmodule_config/test_hello_world.py b/doc/en/example/assertion/global_testmodule_config/test_hello_world.py
index a31a601a1ce..bfccc94f712 100644
--- a/doc/en/example/assertion/global_testmodule_config/test_hello_world.py
+++ b/doc/en/example/assertion/global_testmodule_config/test_hello_world.py
@@ -1,3 +1,4 @@
+# -*- coding: utf-8 -*-
 hello = "world"
 
 
diff --git a/doc/en/example/assertion/test_failures.py b/doc/en/example/assertion/test_failures.py
index 30ebc72dc37..60b5e213118 100644
--- a/doc/en/example/assertion/test_failures.py
+++ b/doc/en/example/assertion/test_failures.py
@@ -1,3 +1,4 @@
+# -*- coding: utf-8 -*-
 import py
 
 failure_demo = py.path.local(__file__).dirpath("failure_demo.py")
diff --git a/doc/en/example/assertion/test_setup_flow_example.py b/doc/en/example/assertion/test_setup_flow_example.py
index eb339f47418..f49d6d8ed31 100644
--- a/doc/en/example/assertion/test_setup_flow_example.py
+++ b/doc/en/example/assertion/test_setup_flow_example.py
@@ -1,3 +1,4 @@
+# -*- coding: utf-8 -*-
 def setup_module(module):
     module.TestStateFullThing.classcount = 0
 
diff --git a/doc/en/example/conftest.py b/doc/en/example/conftest.py
index f905738c4f6..1f5a961ada0 100644
--- a/doc/en/example/conftest.py
+++ b/doc/en/example/conftest.py
@@ -1 +1,2 @@
+# -*- coding: utf-8 -*-
 collect_ignore = ["nonpython"]
diff --git a/doc/en/example/costlysetup/conftest.py b/doc/en/example/costlysetup/conftest.py
index 57b08b5fa94..b90c774733b 100644
--- a/doc/en/example/costlysetup/conftest.py
+++ b/doc/en/example/costlysetup/conftest.py
@@ -1,3 +1,4 @@
+# -*- coding: utf-8 -*-
 import pytest
 
 
diff --git a/doc/en/example/costlysetup/sub_a/__init__.py b/doc/en/example/costlysetup/sub_a/__init__.py
index 792d6005489..ec51c5a2b9d 100644
--- a/doc/en/example/costlysetup/sub_a/__init__.py
+++ b/doc/en/example/costlysetup/sub_a/__init__.py
@@ -1 +1,2 @@
+# -*- coding: utf-8 -*-
 #
diff --git a/doc/en/example/costlysetup/sub_a/test_quick.py b/doc/en/example/costlysetup/sub_a/test_quick.py
index 38dda2660d2..4f7b9f1ac7d 100644
--- a/doc/en/example/costlysetup/sub_a/test_quick.py
+++ b/doc/en/example/costlysetup/sub_a/test_quick.py
@@ -1,2 +1,3 @@
+# -*- coding: utf-8 -*-
 def test_quick(setup):
     pass
diff --git a/doc/en/example/costlysetup/sub_b/__init__.py b/doc/en/example/costlysetup/sub_b/__init__.py
index 792d6005489..ec51c5a2b9d 100644
--- a/doc/en/example/costlysetup/sub_b/__init__.py
+++ b/doc/en/example/costlysetup/sub_b/__init__.py
@@ -1 +1,2 @@
+# -*- coding: utf-8 -*-
 #
diff --git a/doc/en/example/costlysetup/sub_b/test_two.py b/doc/en/example/costlysetup/sub_b/test_two.py
index b1653aaab88..4e08bc2b69e 100644
--- a/doc/en/example/costlysetup/sub_b/test_two.py
+++ b/doc/en/example/costlysetup/sub_b/test_two.py
@@ -1,3 +1,4 @@
+# -*- coding: utf-8 -*-
 def test_something(setup):
     assert setup.timecostly == 1
 
diff --git a/doc/en/example/multipython.py b/doc/en/example/multipython.py
index 4151c50a0d0..dc722aac91d 100644
--- a/doc/en/example/multipython.py
+++ b/doc/en/example/multipython.py
@@ -1,3 +1,4 @@
+# -*- coding: utf-8 -*-
 """
 module containing a parametrized tests testing cross-python
 serialization via the pickle module.
diff --git a/doc/en/example/nonpython/conftest.py b/doc/en/example/nonpython/conftest.py
index 7c23025af9c..306aa250379 100644
--- a/doc/en/example/nonpython/conftest.py
+++ b/doc/en/example/nonpython/conftest.py
@@ -1,3 +1,4 @@
+# -*- coding: utf-8 -*-
 # content of conftest.py
 import pytest
 
diff --git a/doc/en/example/py2py3/conftest.py b/doc/en/example/py2py3/conftest.py
index 844510a25a3..a6b9af7a860 100644
--- a/doc/en/example/py2py3/conftest.py
+++ b/doc/en/example/py2py3/conftest.py
@@ -1,3 +1,4 @@
+# -*- coding: utf-8 -*-
 import sys
 
 import pytest
diff --git a/doc/en/example/py2py3/test_py3.py b/doc/en/example/py2py3/test_py3.py
index d95702a5348..30151f914a8 100644
--- a/doc/en/example/py2py3/test_py3.py
+++ b/doc/en/example/py2py3/test_py3.py
@@ -1,3 +1,4 @@
+# -*- coding: utf-8 -*-
 def test_exception_syntax():
     try:
         0 / 0
diff --git a/doc/en/example/pythoncollection.py b/doc/en/example/pythoncollection.py
index b134d809df2..bbc3fe868ea 100644
--- a/doc/en/example/pythoncollection.py
+++ b/doc/en/example/pythoncollection.py
@@ -1,3 +1,4 @@
+# -*- coding: utf-8 -*-
 # run this with $ pytest --collect-only test_collectonly.py
 #
 
diff --git a/doc/en/example/xfail_demo.py b/doc/en/example/xfail_demo.py
index 01e6da1ad2e..88384a1562a 100644
--- a/doc/en/example/xfail_demo.py
+++ b/doc/en/example/xfail_demo.py
@@ -1,3 +1,4 @@
+# -*- coding: utf-8 -*-
 import pytest
 
 xfail = pytest.mark.xfail
diff --git a/extra/get_issues.py b/extra/get_issues.py
index 9407aeded7d..598a1af409f 100644
--- a/extra/get_issues.py
+++ b/extra/get_issues.py
@@ -1,3 +1,4 @@
+# -*- coding: utf-8 -*-
 import json
 
 import py
diff --git a/extra/setup-py.test/setup.py b/extra/setup-py.test/setup.py
index d0560ce1f5f..cfe18c28f52 100644
--- a/extra/setup-py.test/setup.py
+++ b/extra/setup-py.test/setup.py
@@ -1,3 +1,4 @@
+# -*- coding: utf-8 -*-
 import sys
 from distutils.core import setup
 
diff --git a/scripts/release.py b/scripts/release.py
index 5009df359e6..32178fcf674 100644
--- a/scripts/release.py
+++ b/scripts/release.py
@@ -1,3 +1,4 @@
+# -*- coding: utf-8 -*-
 """
 Invoke development tasks.
 """
diff --git a/setup.py b/setup.py
index 0fb5a58a294..c16504411a9 100644
--- a/setup.py
+++ b/setup.py
@@ -1,3 +1,4 @@
+# -*- coding: utf-8 -*-
 from setuptools import setup
 
 # TODO: if py gets upgrade to >=1.6,
diff --git a/src/_pytest/__init__.py b/src/_pytest/__init__.py
index 46c7827ed5e..17cc20b615a 100644
--- a/src/_pytest/__init__.py
+++ b/src/_pytest/__init__.py
@@ -1,3 +1,4 @@
+# -*- coding: utf-8 -*-
 __all__ = ["__version__"]
 
 try:
diff --git a/src/_pytest/_argcomplete.py b/src/_pytest/_argcomplete.py
index 455c3a7be08..c6cf1d8fddd 100644
--- a/src/_pytest/_argcomplete.py
+++ b/src/_pytest/_argcomplete.py
@@ -1,3 +1,4 @@
+# -*- coding: utf-8 -*-
 """allow bash-completion for argparse with argcomplete if installed
 needs argcomplete>=0.5.6 for python 3.2/3.3 (older versions fail
 to find the magic string, so _ARGCOMPLETE env. var is never set, and
diff --git a/src/_pytest/_code/__init__.py b/src/_pytest/_code/__init__.py
index fe755a39911..1394b2b10e6 100644
--- a/src/_pytest/_code/__init__.py
+++ b/src/_pytest/_code/__init__.py
@@ -1,3 +1,4 @@
+# -*- coding: utf-8 -*-
 """ python inspection/code generation API """
 from __future__ import absolute_import
 from __future__ import division
diff --git a/src/_pytest/_code/_py2traceback.py b/src/_pytest/_code/_py2traceback.py
index 8a8b7bc000a..faacc02166e 100644
--- a/src/_pytest/_code/_py2traceback.py
+++ b/src/_pytest/_code/_py2traceback.py
@@ -1,3 +1,4 @@
+# -*- coding: utf-8 -*-
 # copied from python-2.7.3's traceback.py
 # CHANGES:
 # - some_str is replaced, trying to create unicode strings
diff --git a/src/_pytest/_code/code.py b/src/_pytest/_code/code.py
index a0b3c78ce31..5f8110428a4 100644
--- a/src/_pytest/_code/code.py
+++ b/src/_pytest/_code/code.py
@@ -1,3 +1,4 @@
+# -*- coding: utf-8 -*-
 from __future__ import absolute_import
 from __future__ import division
 from __future__ import print_function
diff --git a/src/_pytest/_code/source.py b/src/_pytest/_code/source.py
index 39701a39bb0..c8a4b6adf38 100644
--- a/src/_pytest/_code/source.py
+++ b/src/_pytest/_code/source.py
@@ -1,3 +1,4 @@
+# -*- coding: utf-8 -*-
 from __future__ import absolute_import
 from __future__ import division
 from __future__ import print_function
diff --git a/src/_pytest/_io/saferepr.py b/src/_pytest/_io/saferepr.py
index d817e37457c..9b412dccad9 100644
--- a/src/_pytest/_io/saferepr.py
+++ b/src/_pytest/_io/saferepr.py
@@ -1,3 +1,4 @@
+# -*- coding: utf-8 -*-
 import pprint
 
 from six.moves import reprlib
diff --git a/src/_pytest/assertion/__init__.py b/src/_pytest/assertion/__init__.py
index b5c846c2c00..6b6abb863a3 100644
--- a/src/_pytest/assertion/__init__.py
+++ b/src/_pytest/assertion/__init__.py
@@ -1,3 +1,4 @@
+# -*- coding: utf-8 -*-
 """
 support for presenting detailed information in failing assertions.
 """
diff --git a/src/_pytest/assertion/rewrite.py b/src/_pytest/assertion/rewrite.py
index 2903b89957e..68d41c4b96d 100644
--- a/src/_pytest/assertion/rewrite.py
+++ b/src/_pytest/assertion/rewrite.py
@@ -1,3 +1,4 @@
+# -*- coding: utf-8 -*-
 """Rewrite assertion AST to produce nice error messages"""
 from __future__ import absolute_import
 from __future__ import division
diff --git a/src/_pytest/assertion/truncate.py b/src/_pytest/assertion/truncate.py
index 69d6acdef80..525896ea9ad 100644
--- a/src/_pytest/assertion/truncate.py
+++ b/src/_pytest/assertion/truncate.py
@@ -1,3 +1,4 @@
+# -*- coding: utf-8 -*-
 """
 Utilities for truncating assertion output.
 
diff --git a/src/_pytest/assertion/util.py b/src/_pytest/assertion/util.py
index b53646859c0..1fee64ce08d 100644
--- a/src/_pytest/assertion/util.py
+++ b/src/_pytest/assertion/util.py
@@ -1,3 +1,4 @@
+# -*- coding: utf-8 -*-
 """Utilities for assertion debugging"""
 from __future__ import absolute_import
 from __future__ import division
diff --git a/src/_pytest/cacheprovider.py b/src/_pytest/cacheprovider.py
index aa4813c3fcd..3eaf7de28cd 100755
--- a/src/_pytest/cacheprovider.py
+++ b/src/_pytest/cacheprovider.py
@@ -1,3 +1,4 @@
+# -*- coding: utf-8 -*-
 """
 merged implementation of the cache provider
 
diff --git a/src/_pytest/capture.py b/src/_pytest/capture.py
index 25eab7fdf14..80f9c044217 100644
--- a/src/_pytest/capture.py
+++ b/src/_pytest/capture.py
@@ -1,3 +1,4 @@
+# -*- coding: utf-8 -*-
 """
 per-test stdout/stderr capturing mechanism.
 
diff --git a/src/_pytest/compat.py b/src/_pytest/compat.py
index fa878a485f3..19863dd831c 100644
--- a/src/_pytest/compat.py
+++ b/src/_pytest/compat.py
@@ -1,3 +1,4 @@
+# -*- coding: utf-8 -*-
 """
 python version compatibility code
 """
diff --git a/src/_pytest/config/__init__.py b/src/_pytest/config/__init__.py
index 03769b8153f..f2ef45c29b1 100644
--- a/src/_pytest/config/__init__.py
+++ b/src/_pytest/config/__init__.py
@@ -1,3 +1,4 @@
+# -*- coding: utf-8 -*-
 """ command line options, ini-file and conftest.py processing. """
 from __future__ import absolute_import
 from __future__ import division
diff --git a/src/_pytest/config/argparsing.py b/src/_pytest/config/argparsing.py
index cc48ed337e0..37fb772db99 100644
--- a/src/_pytest/config/argparsing.py
+++ b/src/_pytest/config/argparsing.py
@@ -1,3 +1,4 @@
+# -*- coding: utf-8 -*-
 import argparse
 import warnings
 
diff --git a/src/_pytest/config/exceptions.py b/src/_pytest/config/exceptions.py
index 19fe5cb08ed..bf58fde5dbf 100644
--- a/src/_pytest/config/exceptions.py
+++ b/src/_pytest/config/exceptions.py
@@ -1,3 +1,4 @@
+# -*- coding: utf-8 -*-
 class UsageError(Exception):
     """ error in pytest usage or invocation"""
 
diff --git a/src/_pytest/config/findpaths.py b/src/_pytest/config/findpaths.py
index fa202447013..3ece3bdc130 100644
--- a/src/_pytest/config/findpaths.py
+++ b/src/_pytest/config/findpaths.py
@@ -1,3 +1,4 @@
+# -*- coding: utf-8 -*-
 import os
 
 import py
diff --git a/src/_pytest/debugging.py b/src/_pytest/debugging.py
index 52c6536f4dc..139645b17b0 100644
--- a/src/_pytest/debugging.py
+++ b/src/_pytest/debugging.py
@@ -1,3 +1,4 @@
+# -*- coding: utf-8 -*-
 """ interactive debugging with PDB, the Python Debugger. """
 from __future__ import absolute_import
 from __future__ import division
diff --git a/src/_pytest/deprecated.py b/src/_pytest/deprecated.py
index b65700417a4..6283a840246 100644
--- a/src/_pytest/deprecated.py
+++ b/src/_pytest/deprecated.py
@@ -1,3 +1,4 @@
+# -*- coding: utf-8 -*-
 """
 This module contains deprecation messages and bits of code used elsewhere in the codebase
 that is planned to be removed in the next pytest release.
diff --git a/src/_pytest/doctest.py b/src/_pytest/doctest.py
index 34b6c9d8cb4..95a80bb4fa2 100644
--- a/src/_pytest/doctest.py
+++ b/src/_pytest/doctest.py
@@ -1,3 +1,4 @@
+# -*- coding: utf-8 -*-
 """ discover and run doctests in modules and test files."""
 from __future__ import absolute_import
 from __future__ import division
diff --git a/src/_pytest/fixtures.py b/src/_pytest/fixtures.py
index 90290445717..ad2d376f1b2 100644
--- a/src/_pytest/fixtures.py
+++ b/src/_pytest/fixtures.py
@@ -1,3 +1,4 @@
+# -*- coding: utf-8 -*-
 from __future__ import absolute_import
 from __future__ import division
 from __future__ import print_function
diff --git a/src/_pytest/freeze_support.py b/src/_pytest/freeze_support.py
index 5edf3454cd9..aeeec2a56b4 100644
--- a/src/_pytest/freeze_support.py
+++ b/src/_pytest/freeze_support.py
@@ -1,3 +1,4 @@
+# -*- coding: utf-8 -*-
 """
 Provides a function to report all internal modules for using freezing tools
 pytest
diff --git a/src/_pytest/helpconfig.py b/src/_pytest/helpconfig.py
index 2b383d264bc..fb4371d0eee 100644
--- a/src/_pytest/helpconfig.py
+++ b/src/_pytest/helpconfig.py
@@ -1,3 +1,4 @@
+# -*- coding: utf-8 -*-
 """ version info, help messages, tracing configuration.  """
 from __future__ import absolute_import
 from __future__ import division
diff --git a/src/_pytest/hookspec.py b/src/_pytest/hookspec.py
index d40a368116c..7ab6154b176 100644
--- a/src/_pytest/hookspec.py
+++ b/src/_pytest/hookspec.py
@@ -1,3 +1,4 @@
+# -*- coding: utf-8 -*-
 """ hook specifications for pytest plugins, invoked from main.py and builtin plugins.  """
 from pluggy import HookspecMarker
 
diff --git a/src/_pytest/junitxml.py b/src/_pytest/junitxml.py
index e3c98c37ea8..b58d8fab01a 100644
--- a/src/_pytest/junitxml.py
+++ b/src/_pytest/junitxml.py
@@ -1,3 +1,4 @@
+# -*- coding: utf-8 -*-
 """
     report test results in JUnit-XML format,
     for use with Jenkins and build integration servers.
diff --git a/src/_pytest/logging.py b/src/_pytest/logging.py
index 08670d2b2cc..660912c91dc 100644
--- a/src/_pytest/logging.py
+++ b/src/_pytest/logging.py
@@ -1,3 +1,4 @@
+# -*- coding: utf-8 -*-
 """ Access and control log capturing. """
 from __future__ import absolute_import
 from __future__ import division
diff --git a/src/_pytest/main.py b/src/_pytest/main.py
index 96ead8509d6..fa4d8d3d509 100644
--- a/src/_pytest/main.py
+++ b/src/_pytest/main.py
@@ -1,3 +1,4 @@
+# -*- coding: utf-8 -*-
 """ core implementation of testing process: init, session, runtest loop. """
 from __future__ import absolute_import
 from __future__ import division
diff --git a/src/_pytest/mark/__init__.py b/src/_pytest/mark/__init__.py
index e98dc5c373a..6bc22fe27da 100644
--- a/src/_pytest/mark/__init__.py
+++ b/src/_pytest/mark/__init__.py
@@ -1,3 +1,4 @@
+# -*- coding: utf-8 -*-
 """ generic mechanism for marking and selecting python functions. """
 from __future__ import absolute_import
 from __future__ import division
diff --git a/src/_pytest/mark/evaluate.py b/src/_pytest/mark/evaluate.py
index 793bff79e83..506546e253a 100644
--- a/src/_pytest/mark/evaluate.py
+++ b/src/_pytest/mark/evaluate.py
@@ -1,3 +1,4 @@
+# -*- coding: utf-8 -*-
 import os
 import platform
 import sys
diff --git a/src/_pytest/mark/legacy.py b/src/_pytest/mark/legacy.py
index f784ffa2043..c56482f14d0 100644
--- a/src/_pytest/mark/legacy.py
+++ b/src/_pytest/mark/legacy.py
@@ -1,3 +1,4 @@
+# -*- coding: utf-8 -*-
 """
 this is a place where we put datastructures used by legacy apis
 we hope ot remove
diff --git a/src/_pytest/mark/structures.py b/src/_pytest/mark/structures.py
index a734ae1d483..b133a4e2629 100644
--- a/src/_pytest/mark/structures.py
+++ b/src/_pytest/mark/structures.py
@@ -1,3 +1,4 @@
+# -*- coding: utf-8 -*-
 import inspect
 import warnings
 from collections import namedtuple
diff --git a/src/_pytest/monkeypatch.py b/src/_pytest/monkeypatch.py
index 3e221d3d949..e8671b0c702 100644
--- a/src/_pytest/monkeypatch.py
+++ b/src/_pytest/monkeypatch.py
@@ -1,3 +1,4 @@
+# -*- coding: utf-8 -*-
 """ monkeypatching and mocking functionality.  """
 from __future__ import absolute_import
 from __future__ import division
diff --git a/src/_pytest/nodes.py b/src/_pytest/nodes.py
index 4dd0e1785c8..7342d960738 100644
--- a/src/_pytest/nodes.py
+++ b/src/_pytest/nodes.py
@@ -1,3 +1,4 @@
+# -*- coding: utf-8 -*-
 from __future__ import absolute_import
 from __future__ import division
 from __future__ import print_function
diff --git a/src/_pytest/nose.py b/src/_pytest/nose.py
index 49238826099..fbab91da249 100644
--- a/src/_pytest/nose.py
+++ b/src/_pytest/nose.py
@@ -1,3 +1,4 @@
+# -*- coding: utf-8 -*-
 """ run test suites written for nose. """
 from __future__ import absolute_import
 from __future__ import division
diff --git a/src/_pytest/outcomes.py b/src/_pytest/outcomes.py
index f5798391854..48e2b736725 100644
--- a/src/_pytest/outcomes.py
+++ b/src/_pytest/outcomes.py
@@ -1,3 +1,4 @@
+# -*- coding: utf-8 -*-
 """
 exception classes and constants handling test outcomes
 as well as functions creating them
diff --git a/src/_pytest/pastebin.py b/src/_pytest/pastebin.py
index 9559e3265a2..3f4171207a3 100644
--- a/src/_pytest/pastebin.py
+++ b/src/_pytest/pastebin.py
@@ -1,3 +1,4 @@
+# -*- coding: utf-8 -*-
 """ submit failure or test session information to a pastebin service. """
 from __future__ import absolute_import
 from __future__ import division
diff --git a/src/_pytest/pathlib.py b/src/_pytest/pathlib.py
index 5dd00e74fce..729c41797d9 100644
--- a/src/_pytest/pathlib.py
+++ b/src/_pytest/pathlib.py
@@ -1,3 +1,4 @@
+# -*- coding: utf-8 -*-
 import atexit
 import errno
 import fnmatch
diff --git a/src/_pytest/pytester.py b/src/_pytest/pytester.py
index 413b2182425..21f5b9f243b 100644
--- a/src/_pytest/pytester.py
+++ b/src/_pytest/pytester.py
@@ -1,3 +1,4 @@
+# -*- coding: utf-8 -*-
 """(disabled by default) support for testing pytest and pytest plugins."""
 from __future__ import absolute_import
 from __future__ import division
diff --git a/src/_pytest/python.py b/src/_pytest/python.py
index 18d90985536..f55617e2d9b 100644
--- a/src/_pytest/python.py
+++ b/src/_pytest/python.py
@@ -1,3 +1,4 @@
+# -*- coding: utf-8 -*-
 """ Python test discovery, setup and run of test functions. """
 from __future__ import absolute_import
 from __future__ import division
diff --git a/src/_pytest/python_api.py b/src/_pytest/python_api.py
index 7e75700080d..e2fcdfc28c8 100644
--- a/src/_pytest/python_api.py
+++ b/src/_pytest/python_api.py
@@ -1,3 +1,4 @@
+# -*- coding: utf-8 -*-
 from __future__ import absolute_import
 
 import math
diff --git a/src/_pytest/recwarn.py b/src/_pytest/recwarn.py
index 394d91911f0..574c6a1cced 100644
--- a/src/_pytest/recwarn.py
+++ b/src/_pytest/recwarn.py
@@ -1,3 +1,4 @@
+# -*- coding: utf-8 -*-
 """ recording warnings during test function execution. """
 from __future__ import absolute_import
 from __future__ import division
diff --git a/src/_pytest/reports.py b/src/_pytest/reports.py
index 43d7e54a41b..0bba6762c33 100644
--- a/src/_pytest/reports.py
+++ b/src/_pytest/reports.py
@@ -1,3 +1,4 @@
+# -*- coding: utf-8 -*-
 from pprint import pprint
 
 import py
diff --git a/src/_pytest/resultlog.py b/src/_pytest/resultlog.py
index cd3fde80fbc..bd30b5071e9 100644
--- a/src/_pytest/resultlog.py
+++ b/src/_pytest/resultlog.py
@@ -1,3 +1,4 @@
+# -*- coding: utf-8 -*-
 """ log machine-parseable test session result information in a plain
 text file.
 """
diff --git a/src/_pytest/runner.py b/src/_pytest/runner.py
index 7fb343d4ef2..d51e859f1d1 100644
--- a/src/_pytest/runner.py
+++ b/src/_pytest/runner.py
@@ -1,3 +1,4 @@
+# -*- coding: utf-8 -*-
 """ basic collect and runtest protocol implementations """
 from __future__ import absolute_import
 from __future__ import division
diff --git a/src/_pytest/setuponly.py b/src/_pytest/setuponly.py
index 4bd4ad6d88f..0859011241a 100644
--- a/src/_pytest/setuponly.py
+++ b/src/_pytest/setuponly.py
@@ -1,3 +1,4 @@
+# -*- coding: utf-8 -*-
 from __future__ import absolute_import
 from __future__ import division
 from __future__ import print_function
diff --git a/src/_pytest/setupplan.py b/src/_pytest/setupplan.py
index 351e0be650f..47b0fe82ef6 100644
--- a/src/_pytest/setupplan.py
+++ b/src/_pytest/setupplan.py
@@ -1,3 +1,4 @@
+# -*- coding: utf-8 -*-
 from __future__ import absolute_import
 from __future__ import division
 from __future__ import print_function
diff --git a/src/_pytest/skipping.py b/src/_pytest/skipping.py
index 1d70fb15355..bc8b88e7178 100644
--- a/src/_pytest/skipping.py
+++ b/src/_pytest/skipping.py
@@ -1,4 +1,4 @@
-# coding=utf8
+# -*- coding: utf-8 -*-
 """ support for skip/xfail functions and markers. """
 from __future__ import absolute_import
 from __future__ import division
diff --git a/src/_pytest/stepwise.py b/src/_pytest/stepwise.py
index 68e53a31cb4..0427cd0ea45 100644
--- a/src/_pytest/stepwise.py
+++ b/src/_pytest/stepwise.py
@@ -1,3 +1,4 @@
+# -*- coding: utf-8 -*-
 import pytest
 
 
diff --git a/src/_pytest/terminal.py b/src/_pytest/terminal.py
index 771e6a83593..81e3f1809d2 100644
--- a/src/_pytest/terminal.py
+++ b/src/_pytest/terminal.py
@@ -1,4 +1,4 @@
-# encoding: utf-8
+# -*- coding: utf-8 -*-
 """ terminal reporting of the full testing process.
 
 This is a good source for looking at the various reporting hooks.
diff --git a/src/_pytest/tmpdir.py b/src/_pytest/tmpdir.py
index 4d109cc2bb7..f1b16fb5c97 100644
--- a/src/_pytest/tmpdir.py
+++ b/src/_pytest/tmpdir.py
@@ -1,3 +1,4 @@
+# -*- coding: utf-8 -*-
 """ support for providing temporary directories to test functions.  """
 from __future__ import absolute_import
 from __future__ import division
diff --git a/src/_pytest/unittest.py b/src/_pytest/unittest.py
index 58d79845b73..e2e7efdc539 100644
--- a/src/_pytest/unittest.py
+++ b/src/_pytest/unittest.py
@@ -1,3 +1,4 @@
+# -*- coding: utf-8 -*-
 """ discovery and running of std-library "unittest" style tests. """
 from __future__ import absolute_import
 from __future__ import division
diff --git a/src/_pytest/warning_types.py b/src/_pytest/warning_types.py
index 2777aabeaaf..861010a1275 100644
--- a/src/_pytest/warning_types.py
+++ b/src/_pytest/warning_types.py
@@ -1,3 +1,4 @@
+# -*- coding: utf-8 -*-
 import attr
 
 
diff --git a/src/_pytest/warnings.py b/src/_pytest/warnings.py
index 3360aea9cca..a3debae462f 100644
--- a/src/_pytest/warnings.py
+++ b/src/_pytest/warnings.py
@@ -1,3 +1,4 @@
+# -*- coding: utf-8 -*-
 from __future__ import absolute_import
 from __future__ import division
 from __future__ import print_function
diff --git a/src/pytest.py b/src/pytest.py
index a6376843d24..ccc77b476f5 100644
--- a/src/pytest.py
+++ b/src/pytest.py
@@ -1,3 +1,4 @@
+# -*- coding: utf-8 -*-
 # PYTHON_ARGCOMPLETE_OK
 """
 pytest: unit and functional testing with Python.
diff --git a/testing/code/test_code.py b/testing/code/test_code.py
index 81a87481cda..0b63fcf4d42 100644
--- a/testing/code/test_code.py
+++ b/testing/code/test_code.py
@@ -1,4 +1,4 @@
-# coding: utf-8
+# -*- coding: utf-8 -*-
 from __future__ import absolute_import
 from __future__ import division
 from __future__ import print_function
diff --git a/testing/conftest.py b/testing/conftest.py
index 4582c7d9083..ecc94527918 100644
--- a/testing/conftest.py
+++ b/testing/conftest.py
@@ -1,3 +1,4 @@
+# -*- coding: utf-8 -*-
 import pytest
 
 
diff --git a/testing/deprecated_test.py b/testing/deprecated_test.py
index 4818379fee3..a072f6b210c 100644
--- a/testing/deprecated_test.py
+++ b/testing/deprecated_test.py
@@ -1,3 +1,4 @@
+# -*- coding: utf-8 -*-
 from __future__ import absolute_import
 from __future__ import division
 from __future__ import print_function
diff --git a/testing/example_scripts/acceptance/fixture_mock_integration.py b/testing/example_scripts/acceptance/fixture_mock_integration.py
index c005c919349..c8ccdf1b488 100644
--- a/testing/example_scripts/acceptance/fixture_mock_integration.py
+++ b/testing/example_scripts/acceptance/fixture_mock_integration.py
@@ -1,3 +1,4 @@
+# -*- coding: utf-8 -*-
 """Reproduces issue #3774"""
 
 try:
diff --git a/testing/example_scripts/collect/collect_init_tests/tests/__init__.py b/testing/example_scripts/collect/collect_init_tests/tests/__init__.py
index 9cd366295e7..6211055718f 100644
--- a/testing/example_scripts/collect/collect_init_tests/tests/__init__.py
+++ b/testing/example_scripts/collect/collect_init_tests/tests/__init__.py
@@ -1,2 +1,3 @@
+# -*- coding: utf-8 -*-
 def test_init():
     pass
diff --git a/testing/example_scripts/collect/collect_init_tests/tests/test_foo.py b/testing/example_scripts/collect/collect_init_tests/tests/test_foo.py
index 8f2d73cfa4f..8c560fd139f 100644
--- a/testing/example_scripts/collect/collect_init_tests/tests/test_foo.py
+++ b/testing/example_scripts/collect/collect_init_tests/tests/test_foo.py
@@ -1,2 +1,3 @@
+# -*- coding: utf-8 -*-
 def test_foo():
     pass
diff --git a/testing/example_scripts/collect/package_infinite_recursion/conftest.py b/testing/example_scripts/collect/package_infinite_recursion/conftest.py
index 9629fa646af..9c3d9a791c0 100644
--- a/testing/example_scripts/collect/package_infinite_recursion/conftest.py
+++ b/testing/example_scripts/collect/package_infinite_recursion/conftest.py
@@ -1,2 +1,3 @@
+# -*- coding: utf-8 -*-
 def pytest_ignore_collect(path):
     return False
diff --git a/testing/example_scripts/collect/package_infinite_recursion/tests/test_basic.py b/testing/example_scripts/collect/package_infinite_recursion/tests/test_basic.py
index f174823854e..10c5f605202 100644
--- a/testing/example_scripts/collect/package_infinite_recursion/tests/test_basic.py
+++ b/testing/example_scripts/collect/package_infinite_recursion/tests/test_basic.py
@@ -1,2 +1,3 @@
+# -*- coding: utf-8 -*-
 def test():
     pass
diff --git a/testing/example_scripts/collect/package_init_given_as_arg/pkg/test_foo.py b/testing/example_scripts/collect/package_init_given_as_arg/pkg/test_foo.py
index f174823854e..10c5f605202 100644
--- a/testing/example_scripts/collect/package_init_given_as_arg/pkg/test_foo.py
+++ b/testing/example_scripts/collect/package_init_given_as_arg/pkg/test_foo.py
@@ -1,2 +1,3 @@
+# -*- coding: utf-8 -*-
 def test():
     pass
diff --git a/testing/example_scripts/config/collect_pytest_prefix/conftest.py b/testing/example_scripts/config/collect_pytest_prefix/conftest.py
index 56a4c71d358..13397ccc4c8 100644
--- a/testing/example_scripts/config/collect_pytest_prefix/conftest.py
+++ b/testing/example_scripts/config/collect_pytest_prefix/conftest.py
@@ -1,2 +1,3 @@
+# -*- coding: utf-8 -*-
 class pytest_something(object):
     pass
diff --git a/testing/example_scripts/config/collect_pytest_prefix/test_foo.py b/testing/example_scripts/config/collect_pytest_prefix/test_foo.py
index 8f2d73cfa4f..8c560fd139f 100644
--- a/testing/example_scripts/config/collect_pytest_prefix/test_foo.py
+++ b/testing/example_scripts/config/collect_pytest_prefix/test_foo.py
@@ -1,2 +1,3 @@
+# -*- coding: utf-8 -*-
 def test_foo():
     pass
diff --git a/testing/example_scripts/conftest_usageerror/conftest.py b/testing/example_scripts/conftest_usageerror/conftest.py
index 8973e4252d3..d2f040578fa 100644
--- a/testing/example_scripts/conftest_usageerror/conftest.py
+++ b/testing/example_scripts/conftest_usageerror/conftest.py
@@ -1,3 +1,4 @@
+# -*- coding: utf-8 -*-
 def pytest_configure(config):
     import pytest
 
diff --git a/testing/example_scripts/dataclasses/test_compare_dataclasses.py b/testing/example_scripts/dataclasses/test_compare_dataclasses.py
index 3bbebe2aa26..5381b5ed071 100644
--- a/testing/example_scripts/dataclasses/test_compare_dataclasses.py
+++ b/testing/example_scripts/dataclasses/test_compare_dataclasses.py
@@ -1,3 +1,4 @@
+# -*- coding: utf-8 -*-
 from dataclasses import dataclass
 from dataclasses import field
 
diff --git a/testing/example_scripts/dataclasses/test_compare_dataclasses_field_comparison_off.py b/testing/example_scripts/dataclasses/test_compare_dataclasses_field_comparison_off.py
index 63b9f534e6e..d418dd6b0cf 100644
--- a/testing/example_scripts/dataclasses/test_compare_dataclasses_field_comparison_off.py
+++ b/testing/example_scripts/dataclasses/test_compare_dataclasses_field_comparison_off.py
@@ -1,3 +1,4 @@
+# -*- coding: utf-8 -*-
 from dataclasses import dataclass
 from dataclasses import field
 
diff --git a/testing/example_scripts/dataclasses/test_compare_dataclasses_verbose.py b/testing/example_scripts/dataclasses/test_compare_dataclasses_verbose.py
index 17835c0c3fc..a72ca5119e6 100644
--- a/testing/example_scripts/dataclasses/test_compare_dataclasses_verbose.py
+++ b/testing/example_scripts/dataclasses/test_compare_dataclasses_verbose.py
@@ -1,3 +1,4 @@
+# -*- coding: utf-8 -*-
 from dataclasses import dataclass
 from dataclasses import field
 
diff --git a/testing/example_scripts/dataclasses/test_compare_two_different_dataclasses.py b/testing/example_scripts/dataclasses/test_compare_two_different_dataclasses.py
index 24f185d8ac4..b77b70d3c2d 100644
--- a/testing/example_scripts/dataclasses/test_compare_two_different_dataclasses.py
+++ b/testing/example_scripts/dataclasses/test_compare_two_different_dataclasses.py
@@ -1,3 +1,4 @@
+# -*- coding: utf-8 -*-
 from dataclasses import dataclass
 from dataclasses import field
 
diff --git a/testing/example_scripts/deprecated/test_fixture_named_request.py b/testing/example_scripts/deprecated/test_fixture_named_request.py
index 75514bf8b8c..36addc29954 100644
--- a/testing/example_scripts/deprecated/test_fixture_named_request.py
+++ b/testing/example_scripts/deprecated/test_fixture_named_request.py
@@ -1,3 +1,4 @@
+# -*- coding: utf-8 -*-
 import pytest
 
 
diff --git a/testing/example_scripts/fixtures/custom_item/conftest.py b/testing/example_scripts/fixtures/custom_item/conftest.py
index 25299d72690..fa41d0fba68 100644
--- a/testing/example_scripts/fixtures/custom_item/conftest.py
+++ b/testing/example_scripts/fixtures/custom_item/conftest.py
@@ -1,3 +1,4 @@
+# -*- coding: utf-8 -*-
 import pytest
 
 
diff --git a/testing/example_scripts/fixtures/custom_item/foo/test_foo.py b/testing/example_scripts/fixtures/custom_item/foo/test_foo.py
index f174823854e..10c5f605202 100644
--- a/testing/example_scripts/fixtures/custom_item/foo/test_foo.py
+++ b/testing/example_scripts/fixtures/custom_item/foo/test_foo.py
@@ -1,2 +1,3 @@
+# -*- coding: utf-8 -*-
 def test():
     pass
diff --git a/testing/example_scripts/fixtures/fill_fixtures/test_conftest_funcargs_only_available_in_subdir/sub1/conftest.py b/testing/example_scripts/fixtures/fill_fixtures/test_conftest_funcargs_only_available_in_subdir/sub1/conftest.py
index 79af4bc4790..952e7d60a69 100644
--- a/testing/example_scripts/fixtures/fill_fixtures/test_conftest_funcargs_only_available_in_subdir/sub1/conftest.py
+++ b/testing/example_scripts/fixtures/fill_fixtures/test_conftest_funcargs_only_available_in_subdir/sub1/conftest.py
@@ -1,3 +1,4 @@
+# -*- coding: utf-8 -*-
 import pytest
 
 
diff --git a/testing/example_scripts/fixtures/fill_fixtures/test_conftest_funcargs_only_available_in_subdir/sub1/test_in_sub1.py b/testing/example_scripts/fixtures/fill_fixtures/test_conftest_funcargs_only_available_in_subdir/sub1/test_in_sub1.py
index df36da1369b..b824f4e99ef 100644
--- a/testing/example_scripts/fixtures/fill_fixtures/test_conftest_funcargs_only_available_in_subdir/sub1/test_in_sub1.py
+++ b/testing/example_scripts/fixtures/fill_fixtures/test_conftest_funcargs_only_available_in_subdir/sub1/test_in_sub1.py
@@ -1,2 +1,3 @@
+# -*- coding: utf-8 -*-
 def test_1(arg1):
     pass
diff --git a/testing/example_scripts/fixtures/fill_fixtures/test_conftest_funcargs_only_available_in_subdir/sub2/conftest.py b/testing/example_scripts/fixtures/fill_fixtures/test_conftest_funcargs_only_available_in_subdir/sub2/conftest.py
index 00981c5dc12..2be90b4dfe7 100644
--- a/testing/example_scripts/fixtures/fill_fixtures/test_conftest_funcargs_only_available_in_subdir/sub2/conftest.py
+++ b/testing/example_scripts/fixtures/fill_fixtures/test_conftest_funcargs_only_available_in_subdir/sub2/conftest.py
@@ -1,3 +1,4 @@
+# -*- coding: utf-8 -*-
 import pytest
 
 
diff --git a/testing/example_scripts/fixtures/fill_fixtures/test_conftest_funcargs_only_available_in_subdir/sub2/test_in_sub2.py b/testing/example_scripts/fixtures/fill_fixtures/test_conftest_funcargs_only_available_in_subdir/sub2/test_in_sub2.py
index 1c34f94acc4..a1432042bfd 100644
--- a/testing/example_scripts/fixtures/fill_fixtures/test_conftest_funcargs_only_available_in_subdir/sub2/test_in_sub2.py
+++ b/testing/example_scripts/fixtures/fill_fixtures/test_conftest_funcargs_only_available_in_subdir/sub2/test_in_sub2.py
@@ -1,2 +1,3 @@
+# -*- coding: utf-8 -*-
 def test_2(arg2):
     pass
diff --git a/testing/example_scripts/fixtures/fill_fixtures/test_detect_recursive_dependency_error.py b/testing/example_scripts/fixtures/fill_fixtures/test_detect_recursive_dependency_error.py
index d1efcbb338c..d1e54eea7e4 100644
--- a/testing/example_scripts/fixtures/fill_fixtures/test_detect_recursive_dependency_error.py
+++ b/testing/example_scripts/fixtures/fill_fixtures/test_detect_recursive_dependency_error.py
@@ -1,3 +1,4 @@
+# -*- coding: utf-8 -*-
 import pytest
 
 
diff --git a/testing/example_scripts/fixtures/fill_fixtures/test_extend_fixture_conftest_conftest/conftest.py b/testing/example_scripts/fixtures/fill_fixtures/test_extend_fixture_conftest_conftest/conftest.py
index 5dfd2f77957..87756e6491f 100644
--- a/testing/example_scripts/fixtures/fill_fixtures/test_extend_fixture_conftest_conftest/conftest.py
+++ b/testing/example_scripts/fixtures/fill_fixtures/test_extend_fixture_conftest_conftest/conftest.py
@@ -1,3 +1,4 @@
+# -*- coding: utf-8 -*-
 import pytest
 
 
diff --git a/testing/example_scripts/fixtures/fill_fixtures/test_extend_fixture_conftest_conftest/pkg/conftest.py b/testing/example_scripts/fixtures/fill_fixtures/test_extend_fixture_conftest_conftest/pkg/conftest.py
index 4e22ce5a137..1cd88524b6f 100644
--- a/testing/example_scripts/fixtures/fill_fixtures/test_extend_fixture_conftest_conftest/pkg/conftest.py
+++ b/testing/example_scripts/fixtures/fill_fixtures/test_extend_fixture_conftest_conftest/pkg/conftest.py
@@ -1,3 +1,4 @@
+# -*- coding: utf-8 -*-
 import pytest
 
 
diff --git a/testing/example_scripts/fixtures/fill_fixtures/test_extend_fixture_conftest_conftest/pkg/test_spam.py b/testing/example_scripts/fixtures/fill_fixtures/test_extend_fixture_conftest_conftest/pkg/test_spam.py
index 0d891fbb503..65690c49f23 100644
--- a/testing/example_scripts/fixtures/fill_fixtures/test_extend_fixture_conftest_conftest/pkg/test_spam.py
+++ b/testing/example_scripts/fixtures/fill_fixtures/test_extend_fixture_conftest_conftest/pkg/test_spam.py
@@ -1,2 +1,3 @@
+# -*- coding: utf-8 -*-
 def test_spam(spam):
     assert spam == "spamspam"
diff --git a/testing/example_scripts/fixtures/fill_fixtures/test_extend_fixture_conftest_module/conftest.py b/testing/example_scripts/fixtures/fill_fixtures/test_extend_fixture_conftest_module/conftest.py
index 5dfd2f77957..87756e6491f 100644
--- a/testing/example_scripts/fixtures/fill_fixtures/test_extend_fixture_conftest_module/conftest.py
+++ b/testing/example_scripts/fixtures/fill_fixtures/test_extend_fixture_conftest_module/conftest.py
@@ -1,3 +1,4 @@
+# -*- coding: utf-8 -*-
 import pytest
 
 
diff --git a/testing/example_scripts/fixtures/fill_fixtures/test_extend_fixture_conftest_module/test_extend_fixture_conftest_module.py b/testing/example_scripts/fixtures/fill_fixtures/test_extend_fixture_conftest_module/test_extend_fixture_conftest_module.py
index 46d1446f470..5b344c122f1 100644
--- a/testing/example_scripts/fixtures/fill_fixtures/test_extend_fixture_conftest_module/test_extend_fixture_conftest_module.py
+++ b/testing/example_scripts/fixtures/fill_fixtures/test_extend_fixture_conftest_module/test_extend_fixture_conftest_module.py
@@ -1,3 +1,4 @@
+# -*- coding: utf-8 -*-
 import pytest
 
 
diff --git a/testing/example_scripts/fixtures/fill_fixtures/test_extend_fixture_module_class.py b/testing/example_scripts/fixtures/fill_fixtures/test_extend_fixture_module_class.py
index 2b8218ed7ca..4332c66017b 100644
--- a/testing/example_scripts/fixtures/fill_fixtures/test_extend_fixture_module_class.py
+++ b/testing/example_scripts/fixtures/fill_fixtures/test_extend_fixture_module_class.py
@@ -1,3 +1,4 @@
+# -*- coding: utf-8 -*-
 import pytest
 
 
diff --git a/testing/example_scripts/fixtures/fill_fixtures/test_funcarg_basic.py b/testing/example_scripts/fixtures/fill_fixtures/test_funcarg_basic.py
index 0661cb301fc..ba302c49e6c 100644
--- a/testing/example_scripts/fixtures/fill_fixtures/test_funcarg_basic.py
+++ b/testing/example_scripts/fixtures/fill_fixtures/test_funcarg_basic.py
@@ -1,3 +1,4 @@
+# -*- coding: utf-8 -*-
 import pytest
 
 
diff --git a/testing/example_scripts/fixtures/fill_fixtures/test_funcarg_lookup_classlevel.py b/testing/example_scripts/fixtures/fill_fixtures/test_funcarg_lookup_classlevel.py
index 7b7183dd94e..1004d5d1352 100644
--- a/testing/example_scripts/fixtures/fill_fixtures/test_funcarg_lookup_classlevel.py
+++ b/testing/example_scripts/fixtures/fill_fixtures/test_funcarg_lookup_classlevel.py
@@ -1,3 +1,4 @@
+# -*- coding: utf-8 -*-
 import pytest
 
 
diff --git a/testing/example_scripts/fixtures/fill_fixtures/test_funcarg_lookup_modulelevel.py b/testing/example_scripts/fixtures/fill_fixtures/test_funcarg_lookup_modulelevel.py
index 227abb59374..79d283e9f66 100644
--- a/testing/example_scripts/fixtures/fill_fixtures/test_funcarg_lookup_modulelevel.py
+++ b/testing/example_scripts/fixtures/fill_fixtures/test_funcarg_lookup_modulelevel.py
@@ -1,3 +1,4 @@
+# -*- coding: utf-8 -*-
 import pytest
 
 
diff --git a/testing/example_scripts/fixtures/fill_fixtures/test_funcarg_lookupfails.py b/testing/example_scripts/fixtures/fill_fixtures/test_funcarg_lookupfails.py
index b775203231f..18f426af9c9 100644
--- a/testing/example_scripts/fixtures/fill_fixtures/test_funcarg_lookupfails.py
+++ b/testing/example_scripts/fixtures/fill_fixtures/test_funcarg_lookupfails.py
@@ -1,3 +1,4 @@
+# -*- coding: utf-8 -*-
 import pytest
 
 
diff --git a/testing/example_scripts/fixtures/test_getfixturevalue_dynamic.py b/testing/example_scripts/fixtures/test_getfixturevalue_dynamic.py
index 055a1220b1c..219e57421d8 100644
--- a/testing/example_scripts/fixtures/test_getfixturevalue_dynamic.py
+++ b/testing/example_scripts/fixtures/test_getfixturevalue_dynamic.py
@@ -1,3 +1,4 @@
+# -*- coding: utf-8 -*-
 import pytest
 
 
diff --git a/testing/example_scripts/issue88_initial_file_multinodes/conftest.py b/testing/example_scripts/issue88_initial_file_multinodes/conftest.py
index aa5d878313c..8f3e7b4e52a 100644
--- a/testing/example_scripts/issue88_initial_file_multinodes/conftest.py
+++ b/testing/example_scripts/issue88_initial_file_multinodes/conftest.py
@@ -1,3 +1,4 @@
+# -*- coding: utf-8 -*-
 import pytest
 
 
diff --git a/testing/example_scripts/issue88_initial_file_multinodes/test_hello.py b/testing/example_scripts/issue88_initial_file_multinodes/test_hello.py
index 56444d14748..653d570a88c 100644
--- a/testing/example_scripts/issue88_initial_file_multinodes/test_hello.py
+++ b/testing/example_scripts/issue88_initial_file_multinodes/test_hello.py
@@ -1,2 +1,3 @@
+# -*- coding: utf-8 -*-
 def test_hello():
     pass
diff --git a/testing/example_scripts/issue_519.py b/testing/example_scripts/issue_519.py
index 7199df820fb..24d864a5380 100644
--- a/testing/example_scripts/issue_519.py
+++ b/testing/example_scripts/issue_519.py
@@ -1,3 +1,4 @@
+# -*- coding: utf-8 -*-
 import pprint
 
 import pytest
diff --git a/testing/example_scripts/marks/marks_considered_keywords/test_marks_as_keywords.py b/testing/example_scripts/marks/marks_considered_keywords/test_marks_as_keywords.py
index 35a2c7b7628..61d969a36b8 100644
--- a/testing/example_scripts/marks/marks_considered_keywords/test_marks_as_keywords.py
+++ b/testing/example_scripts/marks/marks_considered_keywords/test_marks_as_keywords.py
@@ -1,3 +1,4 @@
+# -*- coding: utf-8 -*-
 import pytest
 
 
diff --git a/testing/example_scripts/perf_examples/collect_stats/generate_folders.py b/testing/example_scripts/perf_examples/collect_stats/generate_folders.py
index ff1eaf7d6bb..32ca818ead9 100644
--- a/testing/example_scripts/perf_examples/collect_stats/generate_folders.py
+++ b/testing/example_scripts/perf_examples/collect_stats/generate_folders.py
@@ -1,3 +1,4 @@
+# -*- coding: utf-8 -*-
 import argparse
 import pathlib
 
diff --git a/testing/example_scripts/perf_examples/collect_stats/template_test.py b/testing/example_scripts/perf_examples/collect_stats/template_test.py
index 064ade190a1..5d0cd5a7164 100644
--- a/testing/example_scripts/perf_examples/collect_stats/template_test.py
+++ b/testing/example_scripts/perf_examples/collect_stats/template_test.py
@@ -1,2 +1,3 @@
+# -*- coding: utf-8 -*-
 def test_x():
     pass
diff --git a/testing/example_scripts/tmpdir/tmpdir_fixture.py b/testing/example_scripts/tmpdir/tmpdir_fixture.py
index f4ad07462cb..33f0315d52f 100644
--- a/testing/example_scripts/tmpdir/tmpdir_fixture.py
+++ b/testing/example_scripts/tmpdir/tmpdir_fixture.py
@@ -1,3 +1,4 @@
+# -*- coding: utf-8 -*-
 import pytest
 
 
diff --git a/testing/example_scripts/unittest/test_parametrized_fixture_error_message.py b/testing/example_scripts/unittest/test_parametrized_fixture_error_message.py
index d421ce927c9..cef950ee782 100644
--- a/testing/example_scripts/unittest/test_parametrized_fixture_error_message.py
+++ b/testing/example_scripts/unittest/test_parametrized_fixture_error_message.py
@@ -1,3 +1,4 @@
+# -*- coding: utf-8 -*-
 import unittest
 
 import pytest
diff --git a/testing/example_scripts/unittest/test_setup_skip.py b/testing/example_scripts/unittest/test_setup_skip.py
index 93f79bb3b2e..26b6195e96d 100644
--- a/testing/example_scripts/unittest/test_setup_skip.py
+++ b/testing/example_scripts/unittest/test_setup_skip.py
@@ -1,3 +1,4 @@
+# -*- coding: utf-8 -*-
 """Skipping an entire subclass with unittest.skip() should *not* call setUp from a base class."""
 import unittest
 
diff --git a/testing/example_scripts/unittest/test_setup_skip_class.py b/testing/example_scripts/unittest/test_setup_skip_class.py
index 4f251dcba17..0c4a3775723 100644
--- a/testing/example_scripts/unittest/test_setup_skip_class.py
+++ b/testing/example_scripts/unittest/test_setup_skip_class.py
@@ -1,3 +1,4 @@
+# -*- coding: utf-8 -*-
 """Skipping an entire subclass with unittest.skip() should *not* call setUpClass from a base class."""
 import unittest
 
diff --git a/testing/example_scripts/unittest/test_setup_skip_module.py b/testing/example_scripts/unittest/test_setup_skip_module.py
index 98befbe510f..abf782a6217 100644
--- a/testing/example_scripts/unittest/test_setup_skip_module.py
+++ b/testing/example_scripts/unittest/test_setup_skip_module.py
@@ -1,3 +1,4 @@
+# -*- coding: utf-8 -*-
 """setUpModule is always called, even if all tests in the module are skipped"""
 import unittest
 
diff --git a/testing/example_scripts/warnings/test_group_warnings_by_message.py b/testing/example_scripts/warnings/test_group_warnings_by_message.py
index c736135b7b9..29d89597452 100644
--- a/testing/example_scripts/warnings/test_group_warnings_by_message.py
+++ b/testing/example_scripts/warnings/test_group_warnings_by_message.py
@@ -1,3 +1,4 @@
+# -*- coding: utf-8 -*-
 import warnings
 
 import pytest
diff --git a/testing/examples/test_issue519.py b/testing/examples/test_issue519.py
index e83f18fdc93..7da1f4ee664 100644
--- a/testing/examples/test_issue519.py
+++ b/testing/examples/test_issue519.py
@@ -1,3 +1,4 @@
+# -*- coding: utf-8 -*-
 def test_510(testdir):
     testdir.copy_example("issue_519.py")
     testdir.runpytest("issue_519.py")
diff --git a/testing/freeze/create_executable.py b/testing/freeze/create_executable.py
index b53eb09f53b..ab8013317b2 100644
--- a/testing/freeze/create_executable.py
+++ b/testing/freeze/create_executable.py
@@ -1,3 +1,4 @@
+# -*- coding: utf-8 -*-
 """
 Generates an executable with pytest runner embedded using PyInstaller.
 """
diff --git a/testing/freeze/runtests_script.py b/testing/freeze/runtests_script.py
index d03bca8406d..f7381f56863 100644
--- a/testing/freeze/runtests_script.py
+++ b/testing/freeze/runtests_script.py
@@ -1,3 +1,4 @@
+# -*- coding: utf-8 -*-
 """
 This is the script that is actually frozen into an executable: simply executes
 py.test main().
diff --git a/testing/freeze/tests/test_trivial.py b/testing/freeze/tests/test_trivial.py
index 08a55552abb..449dbf9d362 100644
--- a/testing/freeze/tests/test_trivial.py
+++ b/testing/freeze/tests/test_trivial.py
@@ -1,3 +1,4 @@
+# -*- coding: utf-8 -*-
 def test_upper():
     assert "foo".upper() == "FOO"
 
diff --git a/testing/freeze/tox_run.py b/testing/freeze/tox_run.py
index 678a69c858a..29b72792384 100644
--- a/testing/freeze/tox_run.py
+++ b/testing/freeze/tox_run.py
@@ -1,3 +1,4 @@
+# -*- coding: utf-8 -*-
 """
 Called by tox.ini: uses the generated executable to run the tests in ./tests/
 directory.
diff --git a/testing/logging/test_formatter.py b/testing/logging/test_formatter.py
index abceaf85738..1610da8458b 100644
--- a/testing/logging/test_formatter.py
+++ b/testing/logging/test_formatter.py
@@ -1,3 +1,4 @@
+# -*- coding: utf-8 -*-
 import logging
 
 import py.io
diff --git a/testing/python/approx.py b/testing/python/approx.py
index 26e6a4ab209..cd8df5d274f 100644
--- a/testing/python/approx.py
+++ b/testing/python/approx.py
@@ -1,4 +1,4 @@
-# encoding: utf-8
+# -*- coding: utf-8 -*-
 import doctest
 import operator
 import sys
diff --git a/testing/python/collect.py b/testing/python/collect.py
index 9430bcaa1b6..bfd7e672e51 100644
--- a/testing/python/collect.py
+++ b/testing/python/collect.py
@@ -1244,7 +1244,7 @@ def test_syntax_error_with_non_ascii_chars(testdir):
     """
     testdir.makepyfile(
         u"""
-    # -*- coding: UTF-8 -*-
+    # -*- coding: utf-8 -*-
 
     ☃
     """
diff --git a/testing/python/integration.py b/testing/python/integration.py
index a6274701416..d2fea2dc5ca 100644
--- a/testing/python/integration.py
+++ b/testing/python/integration.py
@@ -1,3 +1,4 @@
+# -*- coding: utf-8 -*-
 import pytest
 from _pytest import python
 from _pytest import runner
diff --git a/testing/python/raises.py b/testing/python/raises.py
index f5827e9b0ba..cd463d74b07 100644
--- a/testing/python/raises.py
+++ b/testing/python/raises.py
@@ -1,3 +1,4 @@
+# -*- coding: utf-8 -*-
 import sys
 
 import six
diff --git a/testing/python/setup_only.py b/testing/python/setup_only.py
index 4ae24b15a6d..ba4ceb00fce 100644
--- a/testing/python/setup_only.py
+++ b/testing/python/setup_only.py
@@ -1,3 +1,4 @@
+# -*- coding: utf-8 -*-
 import pytest
 
 
diff --git a/testing/python/setup_plan.py b/testing/python/setup_plan.py
index 0321939a8aa..ad64e42c29c 100644
--- a/testing/python/setup_plan.py
+++ b/testing/python/setup_plan.py
@@ -1,3 +1,4 @@
+# -*- coding: utf-8 -*-
 def test_show_fixtures_and_test(testdir):
     """ Verifies that fixtures are not executed. """
     p = testdir.makepyfile(
diff --git a/testing/test_argcomplete.py b/testing/test_argcomplete.py
index 046d69aa03a..da7758e8e9e 100644
--- a/testing/test_argcomplete.py
+++ b/testing/test_argcomplete.py
@@ -1,3 +1,4 @@
+# -*- coding: utf-8 -*-
 from __future__ import absolute_import
 from __future__ import division
 from __future__ import print_function
diff --git a/testing/test_cacheprovider.py b/testing/test_cacheprovider.py
index 02c758424ce..5024701f1f3 100644
--- a/testing/test_cacheprovider.py
+++ b/testing/test_cacheprovider.py
@@ -1,3 +1,4 @@
+# -*- coding: utf-8 -*-
 from __future__ import absolute_import
 from __future__ import division
 from __future__ import print_function
diff --git a/testing/test_capture.py b/testing/test_capture.py
index 5d80eb63da0..7f757c6d63b 100644
--- a/testing/test_capture.py
+++ b/testing/test_capture.py
@@ -106,7 +106,7 @@ def test_capturing_unicode(testdir, method):
         obj = "u'\u00f6y'"
     testdir.makepyfile(
         """
-        # coding=utf8
+        # -*- coding: utf-8 -*-
         # taken from issue 227 from nosetests
         def test_unicode():
             import sys
diff --git a/testing/test_collection.py b/testing/test_collection.py
index 5aaaddbeac7..1cc8938666f 100644
--- a/testing/test_collection.py
+++ b/testing/test_collection.py
@@ -1,3 +1,4 @@
+# -*- coding: utf-8 -*-
 from __future__ import absolute_import
 from __future__ import division
 from __future__ import print_function
diff --git a/testing/test_compat.py b/testing/test_compat.py
index 6c4d24398d2..b4298d1531d 100644
--- a/testing/test_compat.py
+++ b/testing/test_compat.py
@@ -1,3 +1,4 @@
+# -*- coding: utf-8 -*-
 from __future__ import absolute_import
 from __future__ import division
 from __future__ import print_function
diff --git a/testing/test_config.py b/testing/test_config.py
index ecb8fd4036e..325f4858ed5 100644
--- a/testing/test_config.py
+++ b/testing/test_config.py
@@ -1,3 +1,4 @@
+# -*- coding: utf-8 -*-
 from __future__ import absolute_import
 from __future__ import division
 from __future__ import print_function
diff --git a/testing/test_conftest.py b/testing/test_conftest.py
index acb9b52b4cd..f8e3dfa92e4 100644
--- a/testing/test_conftest.py
+++ b/testing/test_conftest.py
@@ -1,3 +1,4 @@
+# -*- coding: utf-8 -*-
 from __future__ import absolute_import
 from __future__ import division
 from __future__ import print_function
diff --git a/testing/test_doctest.py b/testing/test_doctest.py
index db6c4c2d353..25a35c3c136 100644
--- a/testing/test_doctest.py
+++ b/testing/test_doctest.py
@@ -1,4 +1,4 @@
-# encoding: utf-8
+# -*- coding: utf-8 -*-
 from __future__ import absolute_import
 from __future__ import division
 from __future__ import print_function
@@ -581,7 +581,7 @@ def test_contains_unicode(self, testdir):
         """
         testdir.makepyfile(
             u'''
-            # encoding: utf-8
+            # -*- coding: utf-8 -*-
             def foo():
                 """
                 >>> name = 'с' # not letter 'c' but instead Cyrillic 's'.
@@ -658,7 +658,7 @@ def test_unicode_doctest_module(self, testdir):
         """
         p = testdir.makepyfile(
             test_unicode_doctest_module="""
-            # -*- encoding: utf-8 -*-
+            # -*- coding: utf-8 -*-
             from __future__ import unicode_literals
 
             def fix_bad_unicode(text):
diff --git a/testing/test_entry_points.py b/testing/test_entry_points.py
index dcb9dd525c5..af1db04bc5c 100644
--- a/testing/test_entry_points.py
+++ b/testing/test_entry_points.py
@@ -1,3 +1,4 @@
+# -*- coding: utf-8 -*-
 from __future__ import absolute_import
 from __future__ import division
 from __future__ import print_function
diff --git a/testing/test_helpconfig.py b/testing/test_helpconfig.py
index 9c7806d5489..75888fe14cb 100644
--- a/testing/test_helpconfig.py
+++ b/testing/test_helpconfig.py
@@ -1,3 +1,4 @@
+# -*- coding: utf-8 -*-
 from __future__ import absolute_import
 from __future__ import division
 from __future__ import print_function
diff --git a/testing/test_mark.py b/testing/test_mark.py
index b2f893438d1..5bd97d547e8 100644
--- a/testing/test_mark.py
+++ b/testing/test_mark.py
@@ -1,3 +1,4 @@
+# -*- coding: utf-8 -*-
 from __future__ import absolute_import
 from __future__ import division
 from __future__ import print_function
diff --git a/testing/test_modimport.py b/testing/test_modimport.py
index 3d7a073232c..5dd057c55e2 100644
--- a/testing/test_modimport.py
+++ b/testing/test_modimport.py
@@ -1,3 +1,4 @@
+# -*- coding: utf-8 -*-
 import subprocess
 import sys
 
diff --git a/testing/test_monkeypatch.py b/testing/test_monkeypatch.py
index 9e45e05c880..9b2f4550240 100644
--- a/testing/test_monkeypatch.py
+++ b/testing/test_monkeypatch.py
@@ -1,3 +1,4 @@
+# -*- coding: utf-8 -*-
 from __future__ import absolute_import
 from __future__ import division
 from __future__ import print_function
diff --git a/testing/test_nodes.py b/testing/test_nodes.py
index b13ce1fe604..e86bd5f793e 100644
--- a/testing/test_nodes.py
+++ b/testing/test_nodes.py
@@ -1,3 +1,4 @@
+# -*- coding: utf-8 -*-
 import py
 
 import pytest
diff --git a/testing/test_nose.py b/testing/test_nose.py
index 2fe49177ae8..6eb5f085e84 100644
--- a/testing/test_nose.py
+++ b/testing/test_nose.py
@@ -1,4 +1,4 @@
-# encoding: utf-8
+# -*- coding: utf-8 -*-
 from __future__ import absolute_import
 from __future__ import division
 from __future__ import print_function
@@ -372,7 +372,7 @@ def test_method(self):
 def test_skip_test_with_unicode(testdir):
     testdir.makepyfile(
         """
-        # encoding: utf-8
+        # -*- coding: utf-8 -*-
         import unittest
         class TestClass():
             def test_io(self):
diff --git a/testing/test_parseopt.py b/testing/test_parseopt.py
index 91f9a7d2bec..c570ed60b2f 100644
--- a/testing/test_parseopt.py
+++ b/testing/test_parseopt.py
@@ -1,3 +1,4 @@
+# -*- coding: utf-8 -*-
 from __future__ import absolute_import
 from __future__ import division
 from __future__ import print_function
diff --git a/testing/test_pastebin.py b/testing/test_pastebin.py
index 04f316e5227..9491f6d9019 100644
--- a/testing/test_pastebin.py
+++ b/testing/test_pastebin.py
@@ -1,4 +1,4 @@
-# encoding: utf-8
+# -*- coding: utf-8 -*-
 from __future__ import absolute_import
 from __future__ import division
 from __future__ import print_function
@@ -68,7 +68,7 @@ def test_non_ascii_paste_text(self, testdir):
         """
         testdir.makepyfile(
             test_unicode="""
-            # encoding: utf-8
+            # -*- coding: utf-8 -*-
             def test():
                 assert '☺' == 1
         """
diff --git a/testing/test_pathlib.py b/testing/test_pathlib.py
index 8ac4040702a..541d289f777 100644
--- a/testing/test_pathlib.py
+++ b/testing/test_pathlib.py
@@ -1,3 +1,4 @@
+# -*- coding: utf-8 -*-
 import sys
 
 import py
diff --git a/testing/test_pdb.py b/testing/test_pdb.py
index 3b21bacd902..ed38a613389 100644
--- a/testing/test_pdb.py
+++ b/testing/test_pdb.py
@@ -1,3 +1,4 @@
+# -*- coding: utf-8 -*-
 from __future__ import absolute_import
 from __future__ import division
 from __future__ import print_function
diff --git a/testing/test_pluginmanager.py b/testing/test_pluginmanager.py
index 12990c8676c..23655164343 100644
--- a/testing/test_pluginmanager.py
+++ b/testing/test_pluginmanager.py
@@ -1,4 +1,4 @@
-# encoding: UTF-8
+# -*- coding: utf-8 -*-
 from __future__ import absolute_import
 from __future__ import division
 from __future__ import print_function
@@ -155,7 +155,7 @@ def test_importplugin_error_message(testdir, pytestpm):
     testdir.syspathinsert(testdir.tmpdir)
     testdir.makepyfile(
         qwe="""
-        # encoding: UTF-8
+        # -*- coding: utf-8 -*-
         def test_traceback():
             raise ImportError(u'Not possible to import: ☺')
         test_traceback()
diff --git a/testing/test_recwarn.py b/testing/test_recwarn.py
index 982e246d744..2246085f59e 100644
--- a/testing/test_recwarn.py
+++ b/testing/test_recwarn.py
@@ -1,3 +1,4 @@
+# -*- coding: utf-8 -*-
 from __future__ import absolute_import
 from __future__ import division
 from __future__ import print_function
diff --git a/testing/test_reports.py b/testing/test_reports.py
index 6d2b167f871..5c6851e49bd 100644
--- a/testing/test_reports.py
+++ b/testing/test_reports.py
@@ -1,3 +1,4 @@
+# -*- coding: utf-8 -*-
 import pytest
 from _pytest.pathlib import Path
 from _pytest.reports import CollectReport
diff --git a/testing/test_resultlog.py b/testing/test_resultlog.py
index aba5713af52..1ef49d5e2d9 100644
--- a/testing/test_resultlog.py
+++ b/testing/test_resultlog.py
@@ -1,3 +1,4 @@
+# -*- coding: utf-8 -*-
 from __future__ import absolute_import
 from __future__ import division
 from __future__ import print_function
diff --git a/testing/test_runner.py b/testing/test_runner.py
index c52d2ea7cfa..6906efb910c 100644
--- a/testing/test_runner.py
+++ b/testing/test_runner.py
@@ -645,7 +645,7 @@ def test_pytest_fail_notrace_non_ascii(testdir, str_prefix):
     """
     testdir.makepyfile(
         u"""
-        # coding: utf-8
+        # -*- coding: utf-8 -*-
         import pytest
 
         def test_hello():
diff --git a/testing/test_runner_xunit.py b/testing/test_runner_xunit.py
index 6b5752b77ad..5be7297f6c5 100644
--- a/testing/test_runner_xunit.py
+++ b/testing/test_runner_xunit.py
@@ -1,3 +1,4 @@
+# -*- coding: utf-8 -*-
 """
  test correct setup/teardowns at
  module, class, and instance level
diff --git a/testing/test_session.py b/testing/test_session.py
index 377b28937ef..c4b0eea7995 100644
--- a/testing/test_session.py
+++ b/testing/test_session.py
@@ -1,3 +1,4 @@
+# -*- coding: utf-8 -*-
 from __future__ import absolute_import
 from __future__ import division
 from __future__ import print_function
diff --git a/testing/test_skipping.py b/testing/test_skipping.py
index fb0822f8fd1..38273073dbd 100644
--- a/testing/test_skipping.py
+++ b/testing/test_skipping.py
@@ -1,4 +1,4 @@
-# coding=utf8
+# -*- coding: utf-8 -*-
 from __future__ import absolute_import
 from __future__ import division
 from __future__ import print_function
diff --git a/testing/test_stepwise.py b/testing/test_stepwise.py
index 2202bbf1b60..68e5989ecdb 100644
--- a/testing/test_stepwise.py
+++ b/testing/test_stepwise.py
@@ -1,3 +1,4 @@
+# -*- coding: utf-8 -*-
 import pytest
 
 
diff --git a/testing/test_terminal.py b/testing/test_terminal.py
index f269fccd2ff..fef73c4a9ce 100644
--- a/testing/test_terminal.py
+++ b/testing/test_terminal.py
@@ -1,4 +1,4 @@
-# encoding: utf-8
+# -*- coding: utf-8 -*-
 """
 terminal reporting of the full testing process.
 """
diff --git a/testing/test_tmpdir.py b/testing/test_tmpdir.py
index c49f7930da0..40ffe98af98 100644
--- a/testing/test_tmpdir.py
+++ b/testing/test_tmpdir.py
@@ -1,3 +1,4 @@
+# -*- coding: utf-8 -*-
 from __future__ import absolute_import
 from __future__ import division
 from __future__ import print_function
diff --git a/testing/test_unittest.py b/testing/test_unittest.py
index 78250dae348..bb41952abbe 100644
--- a/testing/test_unittest.py
+++ b/testing/test_unittest.py
@@ -1,3 +1,4 @@
+# -*- coding: utf-8 -*-
 from __future__ import absolute_import
 from __future__ import division
 from __future__ import print_function
diff --git a/testing/test_warnings.py b/testing/test_warnings.py
index 0daa466b74d..092604d7db0 100644
--- a/testing/test_warnings.py
+++ b/testing/test_warnings.py
@@ -1,4 +1,4 @@
-# -*- coding: utf8 -*-
+# -*- coding: utf-8 -*-
 from __future__ import unicode_literals
 
 import sys
@@ -133,7 +133,7 @@ def test_ignore(testdir, pyfile_with_warnings, method):
 def test_unicode(testdir, pyfile_with_warnings):
     testdir.makepyfile(
         """
-        # -*- coding: utf8 -*-
+        # -*- coding: utf-8 -*-
         import warnings
         import pytest
 
@@ -168,7 +168,7 @@ def test_py2_unicode(testdir, pyfile_with_warnings):
         pytest.xfail("fails with unicode error on PyPy2 5.9 and Windows (#2905)")
     testdir.makepyfile(
         """
-        # -*- coding: utf8 -*-
+        # -*- coding: utf-8 -*-
         import warnings
         import pytest
 
@@ -577,7 +577,7 @@ def test_infinite_loop_warning_against_unicode_usage_py2(testdir):
     """
     testdir.makepyfile(
         """
-        # -*- coding: utf8 -*-
+        # -*- coding: utf-8 -*-
         from __future__ import unicode_literals
         import warnings
         import pytest