diff --git a/CHANGELOG.md b/CHANGELOG.md
index 406de47b29..b490e963c8 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -6,6 +6,7 @@ All notable changes to the Pony compiler and standard library will be documented
 
 ### Fixed
 
+- Fix is_null_terminated reading arbitrary memory (issue #1425) (PR #1429)
 - Set null terminator in String.from_iso_array (issue #1435) (PR #1436)
 ### Added