diff --git a/.travis.yml b/.travis.yml
index 184d3d4d..42e174e9 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -7,12 +7,8 @@ matrix:
       env: TOXENV=check
     - python: '3.6'
       env: TOXENV=docs
-    - python: '2.6'
-      env: TOXENV=py26-pytestrelease
     - python: '2.7'
       env: TOXENV=py27-pytestrelease
-    - python: '3.3'
-      env: TOXENV=py33-pytestrelease
     - python: '3.4'
       env: TOXENV=py34-pytestrelease
     - python: '3.5'
diff --git a/CHANGELOG.rst b/CHANGELOG.rst
index a777b211..daa0f547 100644
--- a/CHANGELOG.rst
+++ b/CHANGELOG.rst
@@ -1,3 +1,10 @@
+0.6.0
+-----
+
+- Drop support for EOL Python 2.6 and 3.3 in PR `#103`_.
+
+.. _#103: https://github.com/pytest-dev/pluggy/pull/103
+
 0.5.2
 -----
 - fix bug where ``firstresult`` wrappers were being sent an incorrectly configured
diff --git a/appveyor.yml b/appveyor.yml
index c1b2fee2..c3903f8b 100644
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -3,7 +3,6 @@ environment:
   # note: please use "tox --listenvs" to populate the build matrix below
   - TOXENV: "check"
   - TOXENV: "docs"
-  - TOXENV: "py26-pytestrelease"
   - TOXENV: "py27-pytestrelease"
   - TOXENV: "py34-pytestrelease"
   - TOXENV: "py35-pytestrelease"
diff --git a/pluggy/__init__.py b/pluggy/__init__.py
index 870b6c9c..dd7ff41a 100644
--- a/pluggy/__init__.py
+++ b/pluggy/__init__.py
@@ -609,7 +609,7 @@ def __call__(self, *args, **kwargs):
                 kwargs.keys())
             if notincall:
                 warnings.warn(
-                    "Argument(s) {0} which are declared in the hookspec "
+                    "Argument(s) {} which are declared in the hookspec "
                     "can not be found in this hook call"
                     .format(tuple(notincall)),
                     stacklevel=2,
diff --git a/setup.py b/setup.py
index c8a72607..4774b2e1 100644
--- a/setup.py
+++ b/setup.py
@@ -14,7 +14,7 @@
     'Programming Language :: Python :: Implementation :: CPython',
     'Programming Language :: Python :: Implementation :: PyPy'] + [
     ('Programming Language :: Python :: %s' % x) for x in
-    '2 2.6 2.7 3 3.3 3.4 3.5 3.6'.split()]
+    '2 2.7 3 3.4 3.5 3.6'.split()]
 
 with open('README.rst') as fd:
     long_description = fd.read()
diff --git a/tox.ini b/tox.ini
index 2acf6835..7b2bb4d4 100644
--- a/tox.ini
+++ b/tox.ini
@@ -1,5 +1,5 @@
 [tox]
-envlist=check,docs,py{26,27,34,35,36,py}-pytestrelease,py{27,36}-pytest{master,features}
+envlist=check,docs,py{27,34,35,36,py}-pytestrelease,py{27,36}-pytest{master,features}
 
 [testenv]
 commands=py.test {posargs:testing/}