diff --git a/setup.py b/setup.py
index 3065740f8..9a35f6d9e 100644
--- a/setup.py
+++ b/setup.py
@@ -5,7 +5,7 @@
 import glob
 import os
 
-from setuptools import find_packages, setup
+from setuptools import find_packages, setup, Extension
 
 libs = list(glob.glob("./bitsandbytes/libbitsandbytes*.so"))
 libs = [os.path.basename(p) for p in libs]
@@ -29,6 +29,7 @@ def read(fname):
     package_data={"": libs},
     long_description=read("README.md"),
     long_description_content_type="text/markdown",
+    ext_modules=[Extension("bitsandbytes", sources=[], language="c")],
     classifiers=[
         "Development Status :: 4 - Beta",
         "Topic :: Scientific/Engineering :: Artificial Intelligence",