diff --git a/CHANGELOG.md b/CHANGELOG.md
index bb472b85e0..cf9fad808f 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 use after free bug in actor heap finalisation that can lead to a segfault ([PR #4522](https://github.com/ponylang/ponyc/pull/4522))
 
 ### Added