diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index a0d7b632cfc9dd7833178bf59ec96dd9d8110d78..8534e93221b6d271d5ae0c7257d6efca80ed640e 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -1,3 +1,5 @@
+image: python:3
+
 stages:
   - test
   - build