diff --git a/sdks/python/tox.ini b/sdks/python/tox.ini
index 31bcc9cdb572..7cfca4d543a7 100644
--- a/sdks/python/tox.ini
+++ b/sdks/python/tox.ini
@@ -17,7 +17,7 @@
 
 [tox]
 # new environments will be excluded by default unless explicitly added to envlist.
-envlist = py27,py27gcp,py27cython,lint,docs
+envlist = py27,py27gcp,py27cython,py36,lint,docs
 toxworkdir = {toxinidir}/target/.tox
 
 [pycodestyle]
@@ -90,6 +90,15 @@ commands =
   python setup.py test
 passenv = TRAVIS*
 
+[testenv:py36]
+deps =
+  flake8==3.5.0
+commands =
+  python --version
+  pip --version
+  flake8 . --count --exit-zero --select=E901,E999,F821,F822,F823 --show-source --statistics
+passenv = TRAVIS*
+
 [testenv:lint]
 deps=
   nose==1.3.7