diff --git a/lib/ts/types.ts b/lib/ts/types.ts
index 1aa48a340..5785bdf77 100644
--- a/lib/ts/types.ts
+++ b/lib/ts/types.ts
@@ -289,6 +289,11 @@ export type NormalisedFormField = {
      * Moves focus to the input element when it mounts
      */
     autofocus?: boolean;
+
+    /*
+     * Ability to add custom components
+     */
+    inputComponent?: React.FC<InputProps>;
 };
 
 export type ReactComponentClass<P = any> = ComponentClass<P, any> | ((props: P) => JSX.Element);