diff --git a/docs/guides/integration/gitlab.md b/docs/guides/integration/gitlab.md
index 08cf688c6..0a4073394 100644
--- a/docs/guides/integration/gitlab.md
+++ b/docs/guides/integration/gitlab.md
@@ -13,8 +13,8 @@ Select a variant that is suitable for your workflow.
 
 ```yaml title="gitlab-ci.yml"
 variables:
-  UV_VERSION: 0.5
-  PYTHON_VERSION: 3.12
+  UV_VERSION: "0.5"
+  PYTHON_VERSION: "3.12"
   BASE_LAYER: bookworm-slim
   # GitLab CI creates a separate mountpoint for the build directory,
   # so we need to copy instead of using hard links.