diff --git a/setup.py b/setup.py
index 25e4a0d041..2d056124a1 100644
--- a/setup.py
+++ b/setup.py
@@ -11,7 +11,8 @@
 packages = find_packages()
 
 package_data = {'': ['*.tmpl',
-                     '*.patch', ], }
+                     '*.patch',
+                     '*.diff', ], }
 
 data_files = []