diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 672366ba..8e165297 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -5,6 +5,7 @@ stages:
   - staging
 variables:
   DB_HOST: mysql
+  DB_PORT: 3306
   MYSQL_DATABASE: default
   MYSQL_USER: default
   MYSQL_PASSWORD: secret