diff --git a/stubs/setuptools/setuptools/__init__.pyi b/stubs/setuptools/setuptools/__init__.pyi
index 52c81396d..99ad9222e 100644
--- a/stubs/setuptools/setuptools/__init__.pyi
+++ b/stubs/setuptools/setuptools/__init__.pyi
@@ -33,6 +33,7 @@ def setup(
     version: str = ...,
     description: str = ...,
     long_description: str = ...,
+    long_description_content_type: str = ...,
     author: str = ...,
     author_email: str = ...,
     maintainer: str = ...,