chore: Update changelog (#2256)

**Description**

Updated the changelog

Author: matthewmcneely

.github/workflows/ci-badger-bank-tests.yml

@@ -1,6 +1,7 @@
 name: ci-badger-bank-tests
 
 on:
+  workflow_dispatch: # allows manual trigger from GitHub
   pull_request:
     paths-ignore:
       - "**.md"

.github/workflows/ci-badger-tests.yml

@@ -1,6 +1,7 @@
 name: ci-badger-tests
 
 on:
+  workflow_dispatch: # allows manual trigger from GitHub
   pull_request:
     paths-ignore:
       - "**.md"

CHANGELOG.md

@@ -4,6 +4,23 @@ All notable changes to this project will be documented in this file.
 
 The format is based on [Keep a Changelog](http://keepachangelog.com/en/1.0.0/).
 
+## [4.9.1] - 2026-02-04
+
+**Fixed**
+
+- fix(aix): add aix directory synchronization support (#2115)
+- fix: correct the comment on value size in skl.node (#2250)
+
+**Tests**
+
+- test: add checksum tests for package y (#2246)
+
+**Chores**
+
+- chore(ci): update arm runner label (#2248)
+
+**Full Changelog**: https://github.com/dgraph-io/badger/compare/v4.9.0...v4.9.1
+
 ## [4.9.0] - 2025-12-15
 
 **Fixed**

contrib/RELEASE.md

@@ -5,7 +5,7 @@ This document outlines the steps needed to build and push a new release of Badge
 1. Have a team member "at-the-ready" with github `writer` access (you'll need them to approve PRs).
 1. Create a new branch (prepare-for-release-vXX.X.X, for instance).
 1. Update dependencies in `go.mod` for Ristretto, if required.
-1. Update the CHANGELOG.md. Sonnet 4.5 does a great job of doing this. Example prompt:
+1. Update the CHANGELOG.md. Opus 4.5 does a great job of doing this. Example prompt:
    `I'm releasing vXX.X.X off the main branch, add a new entry for this release. Conform to the`
    `"Keep a Changelog" format, use past entries as a formatting guide. Run the trunk linter.`
 1. Validate the version does not have storage incompatibilities with the previous version. If so,
@@ -34,7 +34,7 @@ This document outlines the steps needed to build and push a new release of Badge
 1. Splash the "go index" cache to ensure that the latest release is available to the public with:
 
    ```sh
-   go list -m github.com/dgraph-io/badger@vX.X.X
+   go list -m github.com/dgraph-io/badger/v4@vX.X.X
    ```
 
 1. If needed, create a new announcement thread in the