diff --git a/tests/compose/snappymail/docker-compose.yml b/tests/compose/snappymail/docker-compose.yml
index 42182a9a..b9df7332 100644
--- a/tests/compose/snappymail/docker-compose.yml
+++ b/tests/compose/snappymail/docker-compose.yml
@@ -88,7 +88,7 @@ services:
 
   # Webmail
   webmail:
-    image: ${DOCKER_ORG:-mailu}/${DOCKER_PREFIX:-}snappymail:${PINNED_MAILU_VERSION:-local}
+    image: ${DOCKER_ORG:-mailu}/${DOCKER_PREFIX:-}snappymail:${MAILU_VERSION:-local}
     restart: always
     env_file: mailu.env
     volumes: