diff --git a/pyproject.toml b/pyproject.toml
index 9776611..e00e75c 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -79,3 +79,6 @@ package-dir = {"" = "src"}
 
 [tool.setuptools.packages.find]
 where = ["src"]
+
+[tool.setuptools.package-data]
+knowledge_mapper = ["py.typed"]
diff --git a/src/knowledge_mapper/py.typed b/src/knowledge_mapper/py.typed
new file mode 100644
index 0000000..e69de29