diff --git a/types/require-dir/index.d.ts b/types/require-dir/index.d.ts
index ba31e89f79..2792fe3914 100644
--- a/types/require-dir/index.d.ts
+++ b/types/require-dir/index.d.ts
@@ -1,8 +1,16 @@
-// Type definitions for require-dir 0.3
+// Type definitions for require-dir 1.0
 // Project: https://github.com/aseemk/requireDir
 // Definitions by: weekens <https://github.com/weekens>
 // Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
 
-declare function requireDir(directory: string): { [path: string]: any };
+interface options {
+   recurse?: boolean;
+   duplicates?: boolean;
+   filter?: any;
+   mapKey?: any;
+   mapValue?: any;
+}
+
+declare function requireDir(directory: string, options?: options): { [path: string]: any };
 
 export = requireDir;