diff --git a/src/yamlWorker.ts b/src/yamlWorker.ts
index 35b0edd..560bfb5 100644
--- a/src/yamlWorker.ts
+++ b/src/yamlWorker.ts
@@ -45,6 +45,7 @@ export function createYAMLWorker(
     null,
     null,
     null,
+    null,
   );
   languageService.configure(languageSettings);