diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 1ff4cefe99d18ba805ecadf43180427ec31f8766..59bd7b9cb0259489114a1b7d2049921caec29486 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -27,7 +27,7 @@ py35:
     - tox -e py35
 
 pep8:
-  image: python:2.7
+  image: python:3.4
   stage: style
   script:
     - tox -e pep8