diff --git a/docopt.py b/docopt/__init__.py
similarity index 100%
rename from docopt.py
rename to docopt/__init__.py
diff --git a/docopt/py.typed b/docopt/py.typed
new file mode 100644
index 0000000..e69de29
diff --git a/setup.py b/setup.py
index 71a7ba3..a5407fb 100644
--- a/setup.py
+++ b/setup.py
@@ -12,7 +12,8 @@
     license="MIT",
     keywords="option arguments parsing optparse argparse getopt docopt docopt-ng",
     url="https://github.com/jazzband/docopt-ng",
-    py_modules=["docopt"],
+    package_data={"docopt": ["py.typed"]},
+    packages=["docopt"],
     long_description=open("README.md").read(),
     long_description_content_type='text/markdown',
     classifiers=[