diff --git a/setup.cfg b/setup.cfg
index 1713055cb..08213a20b 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -42,6 +42,7 @@ where = src
 [options.package_data]
 darker =
   py.typed
+  .pyi
 
 [options.entry_points]
 console_scripts =