diff --git a/.release-please-manifest.json b/.release-please-manifest.json
index 87660c5..925e588 100644
--- a/.release-please-manifest.json
+++ b/.release-please-manifest.json
@@ -1 +1 @@
-{".":"12.1.2"}
+{".":"12.2.0"}
diff --git a/CHANGELOG.md b/CHANGELOG.md
index bb8a92d..44418be 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,12 @@
 # Changelog
 
+## [12.2.0](https://github.com/Flagsmith/flagsmith-js-client/compare/v12.1.2...v12.2.0) (2026-08-07)
+
+
+### Features
+
+* Surface engine evaluation reason on flags ([#411](https://github.com/Flagsmith/flagsmith-js-client/issues/411)) ([ad513f8](https://github.com/Flagsmith/flagsmith-js-client/commit/ad513f825d4c3182ebcc0ef236ef86987469fbf7))
+
 ## [12.1.2](https://github.com/Flagsmith/flagsmith-js-client/compare/v12.1.1...v12.1.2) (2026-07-23)
 
 
diff --git a/lib/flagsmith/package-lock.json b/lib/flagsmith/package-lock.json
index de4332c..2e7bd2b 100644
--- a/lib/flagsmith/package-lock.json
+++ b/lib/flagsmith/package-lock.json
@@ -1,12 +1,12 @@
 {
   "name": "@flagsmith/flagsmith",
-  "version": "12.1.2",
+  "version": "12.2.0",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
       "name": "@flagsmith/flagsmith",
-      "version": "12.1.2",
+      "version": "12.2.0",
       "license": "BSD-3-Clause"
     }
   }
diff --git a/lib/flagsmith/package.json b/lib/flagsmith/package.json
index 6bc68a0..8040fc0 100644
--- a/lib/flagsmith/package.json
+++ b/lib/flagsmith/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@flagsmith/flagsmith",
-  "version": "12.1.2",
+  "version": "12.2.0",
   "description": "Feature flagging to support continuous development",
   "main": "./index.js",
   "module": "./index.mjs",
diff --git a/lib/react-native-flagsmith/package-lock.json b/lib/react-native-flagsmith/package-lock.json
index e8f6aba..8bfc15f 100644
--- a/lib/react-native-flagsmith/package-lock.json
+++ b/lib/react-native-flagsmith/package-lock.json
@@ -1,12 +1,12 @@
 {
   "name": "@flagsmith/react-native",
-  "version": "12.1.2",
+  "version": "12.2.0",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
       "name": "@flagsmith/react-native",
-      "version": "12.1.2",
+      "version": "12.2.0",
       "license": "BSD-3-Clause",
       "peerDependencies": {
         "react-native": ">=0.20.0"
diff --git a/lib/react-native-flagsmith/package.json b/lib/react-native-flagsmith/package.json
index 014039f..9aa5d84 100644
--- a/lib/react-native-flagsmith/package.json
+++ b/lib/react-native-flagsmith/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@flagsmith/react-native",
-  "version": "12.1.2",
+  "version": "12.2.0",
   "description": "Feature flagging to support continuous development",
   "main": "./index.js",
   "repository": {