diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 64eb1d9..535f600 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -1,6 +1,6 @@
 pytest:
     stage: test
-    image: python-latest
+    image: python:3.9
     variables:
       PIP_CACHE_DIR: "$CI_PROJECT_DIR/.cache/pip"
     before_script: