diff --git a/setup.py b/setup.py
index 32e46b1..0775457 100644
--- a/setup.py
+++ b/setup.py
@@ -22,5 +22,7 @@ def get_long_description():
     license="Apache License, Version 2.0",
     version=VERSION,
     py_modules=["asgi_csrf"],
-    extras_require={"test": ["pytest", "pytest-asyncio", "httpx", "starlette"]},
+    extras_require={
+        "test": ["pytest", "pytest-asyncio", "httpx", "starlette", "python-multipart"]
+    },
 )