diff --git a/.travis.yml b/.travis.yml
index 9a66809..b0ebc5e 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,13 +1,17 @@
 language: python
 
 python:
-  - "3.4"
+  - "3.6"
 
 env:
-  - TOX_ENV=py26
   - TOX_ENV=py27
-  - TOX_ENV=py33
   - TOX_ENV=py34
+  - TOX_ENV=py35
+  - TOX_ENV=py36
+
+before_install:
+  # work around https://github.com/travis-ci/travis-ci/issues/8363
+  - pyenv global system 3.5
 
 install:
   - travis_retry pip install -U pip wheel tox
diff --git a/setup.py b/setup.py
index 18a4fae..c3d7362 100755
--- a/setup.py
+++ b/setup.py
@@ -38,11 +38,11 @@ setup(
         "Topic :: Software Development :: Libraries :: Python Modules",
         "Programming Language :: Python",
         "Programming Language :: Python :: 2",
-        "Programming Language :: Python :: 2.6",
         "Programming Language :: Python :: 2.7",
         "Programming Language :: Python :: 3",
-        "Programming Language :: Python :: 3.3",
         "Programming Language :: Python :: 3.4",
+        "Programming Language :: Python :: 3.5",
+        "Programming Language :: Python :: 3.6",
 
     ],
 )
diff --git a/tox.ini b/tox.ini
index 50b4a74..b29c95e 100644
--- a/tox.ini
+++ b/tox.ini
@@ -4,7 +4,7 @@
 # and then run "tox" from this directory.
 
 [tox]
-envlist = py26, py27, py33, py34
+envlist = py27, py34, py35, py36
 
 [testenv]
 deps=pytest