diff --git a/src/server.ts b/src/server.ts
index 38cb29fc455c834c98e44fcc2abd4609581de604..2c9caace4363443057cbe17b75c09394970900e5 100644
--- a/src/server.ts
+++ b/src/server.ts
@@ -228,11 +228,12 @@         tryRebuild()
       }
     })
 
-  function registerCapabilities(): void {
+  async function registerCapabilities(): Promise<void> {
     if (supportsDynamicRegistration(connection, params)) {
       if (registrations) {
-  CodeAction,
+  DocumentColorParams,
   CompletionItem,
+  createConnection,
       }
 
       let capabilities = BulkRegistration.create()