diff --git a/playbooks/templates/chaosknoten/configs/keycloak/compose.yaml.j2 b/playbooks/templates/chaosknoten/configs/keycloak/compose.yaml.j2
index 0993f90..bd9e8eb 100644
--- a/playbooks/templates/chaosknoten/configs/keycloak/compose.yaml.j2
+++ b/playbooks/templates/chaosknoten/configs/keycloak/compose.yaml.j2
@@ -86,6 +86,7 @@ services:
       - "APP_KEYCLOAK_BASE_URI=http://id-invite-keycloak:3000"
       - "BOTTLE_HOST=0.0.0.0"
       - "BOTTLE_URL_SCHEME=https"
+      - "IDINVITE_INVITE_REQUIRES_GROUP=id_invite"
       - "IDINVITE_URL=https://invite.hamburg.ccc.de"
       - "IDINVITE_KEYCLOAK_NAME=CCCHH ID"
       - "IDINVITE_VALID_HOURS=50"