CHANGELOG.md in ifsc-1.5.0 vs CHANGELOG.md in ifsc-1.5.1

@@ -3,9 +3,17 @@
 All notable changes to this project will be documented in this file. The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
 ## UNRELEASED
 
+## 1.5.1
+
+### Changes
+
+-   Metadata updates
+-   Madhya Bihar Gramin Bank and Bihar Gramin Bank merged to form
+    Dakshin Bihar Gramin Bank.
+
 ## 1.5.0
 
 ### Added
 
 -   Adds bank constants in nodejs