diff --git a/CHANGELOG.md b/CHANGELOG.md
index 045676c..5bbbe7a 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -4,7 +4,7 @@ See this http://keepachangelog.com link for information on how we want this docu
 
 ## v5.2.1
 
-- Rack v6 compatibility.
+- Rack v7 compatibility.
 - Exit gracefully when SIGTERM error happens.
 
 ## v5.2.0