diff --git a/CHANGELOG.md b/CHANGELOG.md
index 1081b18522..70d5be85a8 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,6 +2,12 @@
 
 See [RELEASE](./RELEASE.md) for workflow instructions.
 
+## Release v1.6.3
+
+### Improvements
+
+* [#6137](https://github.com/spacemeshos/go-spacemesh/pull/6137) Fix hanging ATX sync.
+
 ## Release v1.6.2
 
 ### Improvements