diff --git a/MANIFEST.in b/MANIFEST.in
index d8a725b5..4cb69870 100644
--- a/MANIFEST.in
+++ b/MANIFEST.in
@@ -1,4 +1,4 @@
-include Makefile CHANGES.rst LICENSE AUTHORS tox.ini
+include Makefile CHANGES.rst CONTRIBUTING.rst LICENSE AUTHORS tox.ini
 
 graft artwork
 graft tests