diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index ea9866d2cba9b9c5980186efd5c3bde4eece68da..4b20f9a089137f978bff15dcc909a2c4df68aa2e 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -57,7 +57,7 @@ lint:
     - poetry install
     - make pylint
   variables:
-    PYTHON_VERSION: "3.9"
+    PYTHON_VERSION: "3.6"
 
 .tests:
   extends: .changes