diff --git a/setup.cfg b/setup.cfg
index 5d840582f..88ed6fa57 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -22,6 +22,7 @@ classifiers =
     Programming Language :: Python :: Implementation :: CPython
     Programming Language :: Python :: Implementation :: PyPy
     Topic :: System :: Systems Administration
+    Typing :: Typed
 
 [options]
 python_requires = >=3.7
@@ -40,6 +41,9 @@ install_requires =
 [options.packages.find]
 exclude = tests
 
+[options.package_data]
+piptools = py.typed
+
 [options.extras_require]
 testing =
     pytest