diff --git a/docker-compose.yml b/docker-compose.yml
index 3c55ba7..df3752e 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -19,6 +19,7 @@ services:
       dockerfile: Dockerfile
     environment:
       - DB_HOST=${DB_HOST:-db}
+      - DB_PORT=${DB_PORT:-3306}
       - DB_USER=${DB_USER:-omni_user}
       - DB_PASSWORD=${DB_PASSWORD:-omni_pass}
       - DB_NAME=${DB_NAME:-omnisupport}