Prepare v4.0.0.
diff --git a/MANIFEST.in b/MANIFEST.in
index de1c916..fd9d6a9 100644
--- a/MANIFEST.in
+++ b/MANIFEST.in
@@ -1,4 +1,4 @@
-include CHANGES.rst
+include CHANGELOG.rst
 include LICENSE
 include MANIFEST.in
 include README.rst