diff --git a/README.md b/README.md
index 886712dd76..d37c965ca8 100644
--- a/README.md
+++ b/README.md
@@ -873,7 +873,7 @@ isBoolean(value);
 | `@IsLatLong()`                                         | Checks if the string is a valid latitude-longitude coordinate in the format lat, long.                                                                                                                |
 | `@IsLatitude()`                                        | Checks if the string or number is a valid latitude coordinate.                                                                                                                                        |
 | `@IsLongitude()`                                       | Checks if the string or number is a valid longitude coordinate.                                                                                                                                       |
-| `@IsMobilePhone(locale: string)`                       | Checks if the string is a mobile phone number.                                                                                                                                                        |
+| `@IsMobilePhone(locale: string | string[])`                       | Checks if the string is a mobile phone number.                                                                                                                                                        |
 | `@IsISO31661Alpha2()`                                  | Checks if the string is a valid ISO 3166-1 alpha-2 officially assigned country code.                                                                                                                  |
 | `@IsISO31661Alpha3()`                                  | Checks if the string is a valid ISO 3166-1 alpha-3 officially assigned country code.                                                                                                                  |
 | `@IsLocale()`                                          | Checks if the string is a locale.                                                                                                                                                                     |
diff --git a/src/decorator/string/IsMobilePhone.ts b/src/decorator/string/IsMobilePhone.ts
index 34859b5007..24825f4be4 100644
--- a/src/decorator/string/IsMobilePhone.ts
+++ b/src/decorator/string/IsMobilePhone.ts
@@ -38,7 +38,7 @@ export function isMobilePhone(
  * If given value is not a string, then it returns false.
  */
 export function IsMobilePhone(
-  locale?: ValidatorJS.MobilePhoneLocale,
+  locale?: ValidatorJS.MobilePhoneLocale | ValidatorJS.MobilePhoneLocale[],
   options?: ValidatorJS.IsMobilePhoneOptions,
   validationOptions?: ValidationOptions
 ): PropertyDecorator {