diff --git a/odoo-stubs/tools/mimetypes.pyi b/odoo-stubs/tools/mimetypes.pyi
index 6491c92..80ac2ee 100644
--- a/odoo-stubs/tools/mimetypes.pyi
+++ b/odoo-stubs/tools/mimetypes.pyi
@@ -1,3 +1,4 @@
 def guess_mimetype(bin_data: str, default: str | None = ...) -> str: ...
 def neuter_mimetype(mimetype: str, user) -> str: ...
 def get_extension(filename: str) -> str: ...
+def fix_filename_extension(filename: str, mimetype: str) -> str: ...