diff --git a/setup.py b/setup.py
index 8164c39..472eddb 100644
--- a/setup.py
+++ b/setup.py
@@ -44,6 +44,7 @@ def load_version() -> str:
     },
     packages=setuptools.find_packages(where='src', exclude=['tests*']),
     package_dir={'': 'src'},
+    package_data={'smllib': ['py.typed']},
     classifiers=[
         "Development Status :: 4 - Beta",
         "License :: OSI Approved :: GNU General Public License v3 or later (GPLv3+)",