diff --git a/types/watch/index.d.ts b/types/watch/index.d.ts
index 626d47dbf3..c5d473ad13 100644
--- a/types/watch/index.d.ts
+++ b/types/watch/index.d.ts
@@ -27,7 +27,7 @@ export interface Options {
     interval?: number;
     ignoreUnreadableDir?: boolean;
     ignoreNotPermitted?: boolean;
-    ignoreDirectoryPattern?: boolean;
+    ignoreDirectoryPattern?: RegExp;
 }
 
 export function watchTree(root: string, callback: (f: FileOrFiles, curr: fs.Stats, prev: fs.Stats) => void): void;