diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 079283b8ab4fab9cb36641e12a5cb8aa6e087825..9ee002528056b2dafc7d4ae90bd7b7bb3b90c4e0 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -552,5 +552,5 @@ clean_unstable_mr:
           fi ;
         fi ;
       done
-    - docker system prune --filter until=144h --force
+    - docker system prune --filter until=24h --force
     - docker images