diff --git a/index.d.ts b/index.d.ts
index ca30e0f12f..7ab7f95f76 100644
--- a/index.d.ts
+++ b/index.d.ts
@@ -62,9 +62,9 @@ declare namespace feathers {
      */
     setup?(app?: Application, path?: string): void;
 
-    before(any?): this;
-    after(any?): this;
-    filter(any?): this;
+    before(any?: any): this;
+    after(any?: any): this;
+    filter(any?: any): this;
     
   }