diff --git a/src/lib/@types/index.d.ts b/src/lib/@types/index.d.ts
index 7ce3c41e..69cacb0c 100644
--- a/src/lib/@types/index.d.ts
+++ b/src/lib/@types/index.d.ts
@@ -10,6 +10,12 @@ declare module 'simple-keyboard' {
     buttons: string;
   }
 
+  interface KeyboardButtonAttributes {
+    attribute: string;
+    value: string;
+    buttons: string;
+  }
+
   interface KeyboardOptions {
     /**
      * Modify the keyboard layout.
@@ -41,6 +47,11 @@ declare module 'simple-keyboard' {
      */
     buttonTheme?: KeyboardButtonTheme[];
 
+    /**
+     * A prop to add your own attributes to one or several buttons.
+     */
+    buttonAttributes?: KeyboardButtonAttributes[];
+
     /**
      * Runs a `console.log` every time a key is pressed. Displays the buttons pressed and the current input.
      */