diff --git a/CHANGELOG.md b/CHANGELOG.md
index 4187d54c..968097a1 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -14,6 +14,10 @@
 
 - None
 
+### Dependencies
+
+- Drop ruby 2.4 support.
+
 # Changelog
 
 ## v3.5.1 - 2021-03-07