diff --git a/async_substrate_interface/py.typed b/async_substrate_interface/py.typed
new file mode 100644
index 0000000..e69de29
diff --git a/pyproject.toml b/pyproject.toml
index 5eb5015..836c4e8 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -45,6 +45,9 @@ classifiers = [
 [project.urls]
 Repository = "https://github.com/opentensor/async-substrate-interface/"
 
+[tool.setuptools.package-data]
+async_substrate_interface = ["py.typed"]
+
 [build-system]
 requires = ["setuptools~=70.0.0", "wheel"]
 build-backend = "setuptools.build_meta"