Use correct filename
diff --git a/MANIFEST.in b/MANIFEST.in
index 378edaa..c88aede 100644
--- a/MANIFEST.in
+++ b/MANIFEST.in
@@ -1,4 +1,4 @@
-include HACKING.rst LICENSE AUTHORS CHANGELOG CONTRIBUTING.md CONTRIBUTORS
+include HACKING.md LICENSE AUTHORS CHANGELOG CONTRIBUTING.md CONTRIBUTORS
 include .coveragerc .editorconfig .flake8 plugins/README.md
 include plugins/vim/autoload/yapf.vim plugins/vim/plugin/yapf.vim pylintrc
 include .style.yapf tox.ini .travis.yml .vimrc