diff --git a/src/lib/@types/index.d.ts b/src/lib/@types/index.d.ts
index d6e9322d..07d37f87 100644
--- a/src/lib/@types/index.d.ts
+++ b/src/lib/@types/index.d.ts
@@ -10,6 +10,11 @@ declare module 'simple-keyboard' {
   }
 
   interface KeyboardOptions {
+    /**
+     * Utilities
+     */
+    utilities?: any;
+
     /**
      * Modify the keyboard layout.
      */