diff --git a/components/input/types/index.d.ts b/components/input/types/index.d.ts
index ed135286b..ac2489360 100644
--- a/components/input/types/index.d.ts
+++ b/components/input/types/index.d.ts
@@ -115,6 +115,10 @@ export interface InputProps {
      * Applies 'warning' appearance for validation feedback. Mutually exclusive with `valid` and `error` props
      */
     warning?: boolean
+    /**
+     * Defines the width of the input. Can be any valid CSS measurement
+     */
+    width?: string
     /**
      * Called with signature `({ name: string, value: string }, event)`
      */