diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index f45b8f0670d492444f31cf6b788c631276be693e..ceb758210f9d0e3834968b5241bb3174163721e7 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -77,6 +77,7 @@ coverage:
 
 python38:
   stage: test
+  image: python:3.8
   script:
     - pytest tests dios/test -Werror --junitxml=report.xml
     - python -m saqc --config docs/resources/data/config.csv --data docs/resources/data/data.csv --outfile /tmp/test.csv