diff --git a/packages/infra/docker/vikunja-compose.yml b/packages/infra/docker/vikunja-compose.yml
index 09dbdcf..4f2a48f 100644
--- a/packages/infra/docker/vikunja-compose.yml
+++ b/packages/infra/docker/vikunja-compose.yml
@@ -19,6 +19,7 @@ services:
       VIKUNJA_DATABASE_DATABASE: vikunja
       VIKUNJA_SERVICE_PUBLICURL: https://tasks.infra.mintel.me/
       VIKUNJA_SERVICE_ENABLEREGISTRATION: true
+      VIKUNJA_SERVICE_ALLOWICONCHANGES: false
       VIKUNJA_SERVICE_JWTSECRET: d2FzaHViZXJzZWN1cmVqd3RzZWNyZXQyMDI2IQ==
     volumes:
       - ./data/files:/app/vikunja/files