diff --git a/configuration/matrix.yaml b/configuration/matrix.yaml
index 85eec85..fc86b24 100644
--- a/configuration/matrix.yaml
+++ b/configuration/matrix.yaml
@@ -8,6 +8,9 @@ ingress:
 synapse:
   ingress:
     host: synapse.solidish.dev
+    annotations:
+      cert-manager.io/cluster-issuer: letsencrypt-prod
+    tlsSecret:  synapse-cert
 
 matrixAuthenticationService:
   ingress: