diff --git a/matrix/py.typed b/matrix/py.typed
new file mode 100644
index 0000000..e69de29
diff --git a/pyproject.toml b/pyproject.toml
index d25e9ec..0ca8fec 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -44,6 +44,9 @@ dev = [
 packages = ["matrix"]
 license-files = []
 
+[tool.setuptools.package-data]
+matrix = ["py.typed"]
+
 [tool.setuptools_scm]
 write_to = "matrix/_version.py"