diff --git a/CHANGELOG.md b/CHANGELOG.md
index f5a4b747f69..6d7351e5cad 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -7,6 +7,8 @@ Bug fixes:
 
 * Dump and load instance variables in subclasses of `Exception` (#1766).
 
+* Match out of range ArgumentError message with MRI (#1774, @rafaelfranca)
+
 # 19.3.0
 
 New features: