diff --git a/.travis.yml b/.travis.yml
index 92f20a31..ad1e072a 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -21,9 +21,9 @@ cache:
 
 env:
   - PYTHON_VERSION=2.7
-#  - PYTHON_VERSION=3.3
-#  - PYTHON_VERSION=3.4
-#  - PYTHON_VERSION=3.5
+  - PYTHON_VERSION=3.3
+  - PYTHON_VERSION=3.4
+  - PYTHON_VERSION=3.5
 
 before_install:
   - export CONDA_CACHED=1