diff --git a/watchtower/docker-compose.yml b/watchtower/docker-compose.yml
index 74da74b..d67f9c4 100644
--- a/watchtower/docker-compose.yml
+++ b/watchtower/docker-compose.yml
@@ -2,7 +2,7 @@ version: "3"
 services:
   watchtower:
     env_file: stack.env
-    image: containrrr/watchtower:latest
+    image: ${DOCKER_REGISTRY:-}containrrr/watchtower:latest
     command: --cleanup --label-enable --http-api-periodic-polls --http-api-metrics
     volumes:
       - /var/run/docker.sock:/var/run/docker.sock