diff --git a/core/docker-compose.yml b/core/docker-compose.yml
index e82363f..8011c09 100644
--- a/core/docker-compose.yml
+++ b/core/docker-compose.yml
@@ -70,6 +70,7 @@ services:
       - "--certificatesresolvers.myresolver.acme.dnschallenge=true"
       - "--certificatesresolvers.myresolver.acme.dnschallenge.provider=desec"
       - "--certificatesresolvers.myresolver.acme.dnschallenge.delaybeforecheck=90"
+      - --certificatesresolvers.myresolver.acme.dnschallenge.resolvers=1.1.1.1:53,8.8.8.8:53
       - "--certificatesresolvers.myresolver.acme.email=admin@mapletree.email"
       - "--certificatesresolvers.myresolver.acme.storage=/letsencrypt/acme.json"
     environment: