diff --git a/configuration/matrix.yaml b/configuration/matrix.yaml
index e35025e..1098af4 100644
--- a/configuration/matrix.yaml
+++ b/configuration/matrix.yaml
@@ -6,6 +6,9 @@ ingress:
   tlsSecret:  matrix-cert
 
 synapse:
+  appservices:
+    - configMap: mautrix-discord-registration-yaml
+      configMapKey: registration.yaml
   ingress:
     host: synapse.solidish.dev
     annotations: