diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 0b71689a1b3ec8959e30e1126c3f1f5aeb6c7e65..619c9be71f2aa7dee34c9474aa19a170c82abd5b 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -10,7 +10,7 @@ docker_builder:
   script:
     - |
       if [[ "$CI_COMMIT_BRANCH" == "$CI_DEFAULT_BRANCH" ]]; then
-        tag=""
+        tag=":latest"
         echo "Running on default branch '$CI_DEFAULT_BRANCH': tag = 'latest'"
       else
         tag=":$CI_COMMIT_REF_SLUG"