diff --git a/services/communication/wellknown.yaml b/services/communication/wellknown.yaml
index 56e0c74..7ed7610 100644
--- a/services/communication/wellknown.yaml
+++ b/services/communication/wellknown.yaml
@@ -39,14 +39,17 @@ data:
 
       root /usr/share/nginx/html;
 
-      location = /.well-known/matrix/client {
+      # Some clients request a trailing slash; serve both.
+      location ~ ^/\\.well-known/matrix/client/?$ {
         default_type application/json;
-        try_files $uri =404;
+        add_header Access-Control-Allow-Origin "*" always;
+        try_files /.well-known/matrix/client =404;
       }
 
-      location = /.well-known/matrix/server {
+      location ~ ^/\\.well-known/matrix/server/?$ {
         default_type application/json;
-        try_files $uri =404;
+        add_header Access-Control-Allow-Origin "*" always;
+        try_files /.well-known/matrix/server =404;
       }
     }
 ---