diff --git a/stack.production.yml b/stack.production.yml
index 280fc6f..45068a8 100644
--- a/stack.production.yml
+++ b/stack.production.yml
@@ -28,9 +28,9 @@ services:
       NTFY_CACHE_FILE: /var/lib/ntfy/cache.db
       NTFY_AUTH_FILE: /var/lib/ntfy/auth.db
       NTFY_AUTH_DEFAULT_ACCESS: deny-all
-      NTFY_BEHIND_PROXY: true
+      NTFY_BEHIND_PROXY: "true"
       NTFY_ATTACHMENT_CACHE_DIR: /var/lib/ntfy/attachments
-      NTFY_ENABLE_LOGIN: true
+      NTFY_ENABLE_LOGIN: "true"
     command:
       - serve
     healthcheck: