diff --git a/packages/types/src/index.ts b/packages/types/src/index.ts
index 8ea2e8736..8a725d400 100644
--- a/packages/types/src/index.ts
+++ b/packages/types/src/index.ts
@@ -264,6 +264,7 @@ export interface Timepicker extends Action {
   placeholder?: PlainTextElement;
   confirm?: Confirm;
   focus_on_load?: boolean;
+  timezone?: string;
 }
 
 export interface RadioButtons extends Action {