diff --git a/django-stubs/utils/translation/__init__.pyi b/django-stubs/utils/translation/__init__.pyi
index edcd7f7..9aec212 100644
--- a/django-stubs/utils/translation/__init__.pyi
+++ b/django-stubs/utils/translation/__init__.pyi
@@ -66,6 +66,7 @@ def to_locale(language: str) -> str: ...
 def get_language_from_request(request: WSGIRequest, check_path: bool = ...) -> str: ...
 def templatize(src: str, **kwargs: Any) -> str: ...
 def deactivate_all() -> None: ...
+def get_supported_language_variant(lang_code: str, strict: bool = ...) -> str: ...
 def get_language_info(lang_code: str) -> Any: ...
 
 from . import trans_real as trans_real