diff --git a/isort/py.typed b/isort/py.typed
new file mode 100644
index 000000000..e69de29bb
diff --git a/pyproject.toml b/pyproject.toml
index 086dadfd3..6a361ba85 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -36,6 +36,7 @@ packages = [
 ]
 include = [
     { path = "tests", format = "sdist" },
+    "py.typed"
 ]
 
 [tool.poetry.dependencies]