diff --git a/index.d.ts b/index.d.ts
index 019d100..c5c7aaf 100644
--- a/index.d.ts
+++ b/index.d.ts
@@ -64,7 +64,7 @@ declare module 'monaco-editor/esm/vs/editor/editor.api' {
       /**
        * A list of custom tags.
        */
-      readonly customTags?: Array<string>
+      readonly customTags?: string[];
 
       readonly format?: boolean;
     }