diff --git a/src/monaco.contribution.ts b/src/monaco.contribution.ts
index 8e2c593a..3a9cb6aa 100644
--- a/src/monaco.contribution.ts
+++ b/src/monaco.contribution.ts
@@ -121,7 +121,7 @@ const javascriptDefaults = new LanguageServiceDefaultsImpl(
 	{ allowNonTsExtensions: true, allowJs: true, target: ScriptTarget.Latest },
 	{ noSemanticValidation: true, noSyntaxValidation: false });
 
-function getTypeScriptWorker(): monaco.Promise<Worker> {
+function getTypeScriptWorker(): monaco.Promise<any> {
 	return new monaco.Promise((resolve, reject) => {
  		withMode((mode) => {
  			mode.getTypeScriptWorker()
@@ -130,7 +130,7 @@ function getTypeScriptWorker(): monaco.Promise<Worker> {
  	});
 }
 
-function getJavaScriptWorker(): monaco.Promise<Worker> {
+function getJavaScriptWorker(): monaco.Promise<any> {
 	return new monaco.Promise((resolve, reject) => {
  		withMode((mode) => {
  			mode.getJavaScriptWorker()
diff --git a/src/monaco.d.ts b/src/monaco.d.ts
index 9f5dbb3b..d5f51200 100644
--- a/src/monaco.d.ts
+++ b/src/monaco.d.ts
@@ -107,6 +107,6 @@ declare module monaco.languages.typescript {
     export var typescriptDefaults: LanguageServiceDefaults;
     export var javascriptDefaults: LanguageServiceDefaults;
 
-    export var getTypeScriptWorker: () => monaco.Promise<Worker>;
-    export var getJavaScriptWorker: () => monaco.Promise<Worker>;
+    export var getTypeScriptWorker: () => monaco.Promise<any>;
+    export var getJavaScriptWorker: () => monaco.Promise<any>;
 }