diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 6069fa2..f4c943c 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -17,7 +17,7 @@ variables:
 workflow:
   rules:
     # Disable tag builds.
-    - if: $CI_COMMIT_TAG != $CI_COMMIT_REF_NAME
+    - if: $CI_COMMIT_TAG != $CI_COMMIT_REF_NAME && $CI_PIPELINE_SOURCE == "merge_request_event"
 
 stages:
   - www