diff --git a/permit/py.typed b/permit/py.typed
new file mode 100644
index 0000000..e69de29
diff --git a/setup.py b/setup.py
index 77dab71..a857573 100644
--- a/setup.py
+++ b/setup.py
@@ -28,6 +28,7 @@ def get_readme() -> str:
     install_requires=get_requirements(),
     long_description=get_readme(),
     long_description_content_type="text/markdown",
+    package_data={"permit": ["py.typed"]},
     classifiers=[
         "Operating System :: OS Independent",
         "Programming Language :: Python",