diff --git a/CHANGELOG.md b/CHANGELOG.md
index 3e4e09678b2..abc12d48068 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,6 +2,9 @@
 
 ## 0.5.1
 
+* `Versions`:
+    * `Kotlin Serialization`: `1.2.0` -> `1.2.1`
+
 ## 0.5.0
 
 **Notice**: This version is still depend on Kotlin