diff --git a/types/index.d.ts b/types/index.d.ts
index 1f58a9cc..22c919b8 100644
--- a/types/index.d.ts
+++ b/types/index.d.ts
@@ -6,7 +6,7 @@ declare function dayjs (date?: dayjs.ConfigType, option?: dayjs.OptionType, loca
 declare namespace dayjs {
   export type ConfigType = string | number | Date | Dayjs
 
-  export type OptionType = { locale?: string, format?: string, utc?: boolean } | string
+  export type OptionType = { locale?: string, format?: string, utc?: boolean } | string | string[]
 
   type UnitTypeShort = 'd' | 'M' | 'y' | 'h' | 'm' | 's' | 'ms'
   export type UnitType = 'millisecond' | 'second' | 'minute' | 'hour' | 'day' | 'month' | 'year' | 'date' | UnitTypeShort;