diff --git a/index.d.ts b/index.d.ts
index 7a9ff5cb..4dee1a1c 100644
--- a/index.d.ts
+++ b/index.d.ts
@@ -15,6 +15,7 @@ declare module "rc-time-picker" {
     className?: string;
     id?: string;
     popupClassName?: string;
+    popupStyle?: any;
     showHour?: boolean;
     showMinute?: boolean;
     showSecond?: boolean;