diff --git a/api/@internal/component/ets/common.d.ts b/api/@internal/component/ets/common.d.ts
index 09843ce1d9e311de6bc72d76e6a7235e24087c5f..78a13e49f3872319e865651af4ffb3e42ae43e71 100644
--- a/api/@internal/component/ets/common.d.ts
+++ b/api/@internal/component/ets/common.d.ts
@@ -79,6 +79,8 @@ export declare function lpx2px(value: number): number;
 
 export declare function px2lpx(value: number): number;
 
+export declare function setAppBgColor(params: string): void;
+
 // common enum
 export declare enum Color {
   White,