diff --git a/MANIFEST.in b/MANIFEST.in
new file mode 100644
index 0000000..f18fc93
--- /dev/null
+++ b/MANIFEST.in
@@ -0,0 +1,2 @@
+recursive-include definitions/templates *.mako README *.py *.pyi
+recursive-include definitions *.py *.pyi py.typed
diff --git a/setup.py b/setup.py
index 34d8354..273ab5a 100644
--- a/setup.py
+++ b/setup.py
@@ -16,6 +16,7 @@
         "Programming Language :: Python :: 3.11",
     ],
     packages=find_packages(include=["definitions"]),
+    include_package_data=True,
     install_requires=[
         "SQLAlchemy",
         "psycopg2-binary",