diff --git a/.version b/.version
index a654d65..9ed87d7 100644
--- a/.version
+++ b/.version
@@ -1,3 +1,3 @@
 {
-  "version": "v0.3.0"
+  "version": "v0.3.1"
 }
diff --git a/CHANGELOG.md b/CHANGELOG.md
index db12d0f..fc35741 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,6 +2,12 @@
 
 All notable changes to this project will be documented in this file.
 
+## [0.3.1] - 2026-05-29
+
+### 🐛 Bug Fixes
+
+- Set service.instance.id for unique instance label (#144)
+
 ## [0.3.0] - 2026-05-26
 
 ### 🚀 Features