diff --git a/aiostream/py.typed b/aiostream/py.typed
new file mode 100644
index 0000000..e69de29
diff --git a/setup.py b/setup.py
index 04a9f18..076a02c 100644
--- a/setup.py
+++ b/setup.py
@@ -17,6 +17,9 @@
     install_requires=["typing-extensions"],
     setup_requires=["pytest-runner" if TESTING else ""],
     tests_require=["pytest", "pytest-asyncio", "pytest-cov"],
+    package_data={
+        "aiostream": ["py.typed"],
+    },
     description="Generator-based operators for asynchronous iteration",
     long_description=long_description,
     url="https://github.com/vxgmichel/aiostream",