diff --git a/stdlib/@tests/stubtest_allowlists/common.txt b/stdlib/@tests/stubtest_allowlists/common.txt
index 784599491c9d..f2a6b4079bcf 100644
--- a/stdlib/@tests/stubtest_allowlists/common.txt
+++ b/stdlib/@tests/stubtest_allowlists/common.txt
@@ -202,7 +202,6 @@ ctypes.ARRAY
 ctypes.SetPointerType
 ctypes.c_voidp
 ctypes.util.test
-mimetypes.MimeTypes.add_type
 modulefinder.test
 multiprocessing.managers.Server.accepter
 multiprocessing.managers.Server.create
diff --git a/stdlib/mimetypes.pyi b/stdlib/mimetypes.pyi
index 517193e3516f..9914a34a2d6a 100644
--- a/stdlib/mimetypes.pyi
+++ b/stdlib/mimetypes.pyi
@@ -45,6 +45,7 @@ class MimeTypes:
     types_map: tuple[dict[str, str], dict[str, str]]
     types_map_inv: tuple[dict[str, str], dict[str, str]]
     def __init__(self, filenames: tuple[str, ...] = (), strict: bool = True) -> None: ...
+    def add_type(self, type: str, ext: str, strict: bool = True) -> None: ...
     def guess_extension(self, type: str, strict: bool = True) -> str | None: ...
     def guess_type(self, url: StrPath, strict: bool = True) -> tuple[str | None, str | None]: ...
     def guess_all_extensions(self, type: str, strict: bool = True) -> list[str]: ...