diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 909a883af816b48a25073e8e065eb1fab1861c60..e8352a76b9d4de696c79a79406c1d6675a8bf91a 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -1,4 +1,7 @@
+image: docker:stable
+
 before_script:
+  - apk add --no-cache py-pip
   - pip install pep8
 
 pep8: