diff --git a/types/plugin/utc.d.ts b/types/plugin/utc.d.ts
index 2cdd7525c..544ea4e70 100644
--- a/types/plugin/utc.d.ts
+++ b/types/plugin/utc.d.ts
@@ -12,7 +12,7 @@ declare module 'dayjs' {
 
     isUTC(): boolean
 
-    utcOffset(offset: number, keepLocalTime?: boolean): Dayjs
+    utcOffset(offset: number | string, keepLocalTime?: boolean): Dayjs
   }
 
   export function utc(config?: ConfigType, format?: string, strict?: boolean): Dayjs