diff --git a/pyproject.toml b/pyproject.toml
index 3cb1f63..c95c5fa 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -28,6 +28,7 @@ classifiers = [
     "Operating System :: OS Independent",
     "License :: OSI Approved :: Apache Software License",
     "Intended Audience :: Developers",
+    "Typing :: Typed",
 ]
 dynamic = [
     "dependencies",
diff --git a/src/marshmallow_generic/py.typed b/src/marshmallow_generic/py.typed
new file mode 100644
index 0000000..e69de29