diff --git a/clusters/homelab/apps/synapse/helmrelease.yaml b/clusters/homelab/apps/synapse/helmrelease.yaml
index 0756de8..754a4c7 100644
--- a/clusters/homelab/apps/synapse/helmrelease.yaml
+++ b/clusters/homelab/apps/synapse/helmrelease.yaml
@@ -16,7 +16,6 @@ spec:
   values:
     serverName: commatrix.net-scope.org
 
-    # Internes PostgreSQL deaktivieren — wir nutzen CNPG
     postgres:
       enabled: false
 
@@ -26,8 +25,7 @@ spec:
         host: commatrix.net-scope.org
       signingKey:
         secret: synapse-secret
-        secretKey: SIGNING_KEY
-      # Externes CNPG — Schlüssel heißt "postgres" nicht "postgresql"
+        secretKey: SIGNING_KEY 
       postgres:
         host: synapse-db-rw.synapse.svc.cluster.local
         port: 5432
@@ -37,6 +35,10 @@ spec:
         password:
           secret: synapse-secret
           secretKey: SYNAPSE_DB_PASSWORD
+      additional:
+        config:
+          enable_registration: true
+          registration_requires_token: true
 
     matrixAuthenticationService:
       enabled: true