diff --git a/.release-please-manifest.json b/.release-please-manifest.json
index 925e588..6ba9833 100644
--- a/.release-please-manifest.json
+++ b/.release-please-manifest.json
@@ -1 +1 @@
-{".":"12.2.0"}
+{".":"12.3.0"}
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 789879d..5a64159 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,17 @@
 # Changelog
 
+## [12.3.0](https://github.com/Flagsmith/flagsmith-js-client/compare/v12.2.0...v12.3.0) (2026-08-31)
+
+
+### Features
+
+* preserve trait key casing in API responses ([#416](https://github.com/Flagsmith/flagsmith-js-client/issues/416)) ([58414c0](https://github.com/Flagsmith/flagsmith-js-client/commit/58414c0def16809afc3990b723fa21507d228c01))
+
+
+### Dependency Updates
+
+* Bump @babel/core to 7.29.7 ([#417](https://github.com/Flagsmith/flagsmith-js-client/issues/417)) ([1dcd11f](https://github.com/Flagsmith/flagsmith-js-client/commit/1dcd11ffd967762de5f9b7640c3ef45324be0196))
+
 ## [12.2.0](https://github.com/Flagsmith/flagsmith-js-client/compare/v12.1.2...v12.2.0) (2026-08-28)
 
 
diff --git a/lib/flagsmith/package-lock.json b/lib/flagsmith/package-lock.json
index 2e7bd2b..d5ce09e 100644
--- a/lib/flagsmith/package-lock.json
+++ b/lib/flagsmith/package-lock.json
@@ -1,12 +1,12 @@
 {
   "name": "@flagsmith/flagsmith",
-  "version": "12.2.0",
+  "version": "12.3.0",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
       "name": "@flagsmith/flagsmith",
-      "version": "12.2.0",
+      "version": "12.3.0",
       "license": "BSD-3-Clause"
     }
   }
diff --git a/lib/flagsmith/package.json b/lib/flagsmith/package.json
index 8040fc0..4e365cb 100644
--- a/lib/flagsmith/package.json
+++ b/lib/flagsmith/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@flagsmith/flagsmith",
-  "version": "12.2.0",
+  "version": "12.3.0",
   "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 8bfc15f..d356947 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": "12.2.0",
+  "version": "12.3.0",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
       "name": "@flagsmith/react-native",
-      "version": "12.2.0",
+      "version": "12.3.0",
       "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 9aa5d84..68cf58a 100644
--- a/lib/react-native-flagsmith/package.json
+++ b/lib/react-native-flagsmith/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@flagsmith/react-native",
-  "version": "12.2.0",
+  "version": "12.3.0",
   "description": "Feature flagging to support continuous development",
   "main": "./index.js",
   "repository": {