diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 5a839c11..da591605 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -38,7 +38,7 @@ style:
 
 coverage:
   variables:
-    PYTHON_VERSION: "3.13"
+    PYTHON_VERSION: "3.12"
   image: ghcr.io/astral-sh/uv:$UV_VERSION-python$PYTHON_VERSION-$BASE_LAYER
   stage: test
   script: