diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index dda4db314a8ca8d25b6006974af1d6478aea3e3d..f746ef31b9bd6e5214c6e0edd9b564dc49d24a0e 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -43,8 +43,8 @@ check-style:
     - poetry install --no-root --only=dev
   script:
     - poetry run flake8 program steering
-    - poetry run isort program steering
-    - poetry run black program steering
+    - poetry run isort --check program steering
+    - poetry run black --check --quiet program steering
 
 run_test_cases:
   stage: test