diff --git a/src/lib/@types/index.d.ts b/src/lib/@types/index.d.ts
index cbfac83e..364c8e98 100644
--- a/src/lib/@types/index.d.ts
+++ b/src/lib/@types/index.d.ts
@@ -1,7 +1,7 @@
 declare module 'simple-keyboard' {
   interface KeyboardLayoutObject {
     default: string[];
-    shift?: string[];
+    shift?: any;
     [key: string]: string[];
   }