diff --git a/CHANGELOG.md b/CHANGELOG.md
index 5bbbe7a..af2b5e3 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -4,8 +4,8 @@ See this http://keepachangelog.com link for information on how we want this docu
 
 ## v5.2.1
 
-- Rack v7 compatibility.
-- Exit gracefully when SIGTERM error happens.
+- Rack 3.X compatibility, by removing uninitialized constants.
+- Exit gracefully when SIGTERM or SIGINT signal occurs.
 
 ## v5.2.0