diff --git a/.travis.yml b/.travis.yml
index 97c62cff670..d030e014f8c 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -12,7 +12,7 @@ addons:
       - deadsnakes
     packages:
       - python2.4
-      - python3.5
+      - python3.5-dev
 install:
   - pip install tox PyYAML Jinja2 sphinx
 script: