diff --git a/docker-compose.yaml b/docker-compose.yaml
index afccefc..1b4f624 100644
--- a/docker-compose.yaml
+++ b/docker-compose.yaml
@@ -6,8 +6,8 @@ services:
       context: .
       target: symfony_docker_php
       args:
-        SYMFONY_VERSION: ${SYMFONY_VERSION}
-        STABILITY: ${STABILITY}
+        SYMFONY_VERSION: ${SYMFONY_VERSION:-}
+        STABILITY: ${STABILITY:-stable}
     volumes:
       # Comment out the next line in production
       - ./:/srv/app:rw,cached