diff --git a/rails/gitlab-ci.yml b/rails/gitlab-ci.yml
index e81ef12361c3af4ff6a7871383bc0df5b9d9f973..651a1f3f96c5dd807b63706cdd90c342c94ead03 100644
--- a/rails/gitlab-ci.yml
+++ b/rails/gitlab-ci.yml
@@ -63,6 +63,7 @@ rails_test:
     MYSQL_DATABASE: mysql
     MYSQL_USER: mysql
     MYSQL_PASSWORD: mysql
+    MYSQL_ROOT_PASSWORD: mysql
     MYSQL_URL: "mysql://mysql:mysql@mysql:3306"
     POSTGRES_DB: postgres
     POSTGRES_USER: postgres