diff --git a/packages/optimizely-sdk/CHANGELOG.md b/packages/optimizely-sdk/CHANGELOG.md
index e16d04048..1a2d7d3a8 100644
--- a/packages/optimizely-sdk/CHANGELOG.md
+++ b/packages/optimizely-sdk/CHANGELOG.md
@@ -8,6 +8,11 @@ and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.
 ## [Unreleased]
 - Nothing yet!
 
+## [4.10.0] - October 11, 2023
+
+### New Features
+- Add support for configurable closing event dispatcher, and dispatching events using sendBeacon in the browser on instance close ([#876](https://github.com/optimizely/javascript-sdk/pull/876), [#874](https://github.com/optimizely/javascript-sdk/pull/874), [#873](https://github.com/optimizely/javascript-sdk/pull/873))
+
 ## [4.9.4] - June 8, 2023
 
 ### Performance Improvements
diff --git a/packages/optimizely-sdk/lib/index.browser.tests.js b/packages/optimizely-sdk/lib/index.browser.tests.js
index f6f7f0a5f..a63a04464 100644
--- a/packages/optimizely-sdk/lib/index.browser.tests.js
+++ b/packages/optimizely-sdk/lib/index.browser.tests.js
@@ -148,7 +148,7 @@ describe('javascript-sdk', function () {
         optlyInstance.onReady().catch(function () { });
 
         assert.instanceOf(optlyInstance, Optimizely);
-        assert.equal(optlyInstance.clientVersion, '4.9.4');
+        assert.equal(optlyInstance.clientVersion, '4.10.0');
       });
 
       it('should set the JavaScript client engine and version', function () {
diff --git a/packages/optimizely-sdk/lib/index.lite.tests.js b/packages/optimizely-sdk/lib/index.lite.tests.js
index f6cb8c1f4..f172c9c16 100644
--- a/packages/optimizely-sdk/lib/index.lite.tests.js
+++ b/packages/optimizely-sdk/lib/index.lite.tests.js
@@ -76,7 +76,7 @@ describe('optimizelyFactory', function () {
         optlyInstance.onReady().catch(function () { });
 
         assert.instanceOf(optlyInstance, Optimizely);
-        assert.equal(optlyInstance.clientVersion, '4.9.4');
+        assert.equal(optlyInstance.clientVersion, '4.10.0');
       });
     });
   });
diff --git a/packages/optimizely-sdk/lib/index.node.tests.js b/packages/optimizely-sdk/lib/index.node.tests.js
index cb04d5f29..7c7ea7b52 100644
--- a/packages/optimizely-sdk/lib/index.node.tests.js
+++ b/packages/optimizely-sdk/lib/index.node.tests.js
@@ -90,7 +90,7 @@ describe('optimizelyFactory', function () {
         optlyInstance.onReady().catch(function () { });
 
         assert.instanceOf(optlyInstance, Optimizely);
-        assert.equal(optlyInstance.clientVersion, '4.9.4');
+        assert.equal(optlyInstance.clientVersion, '4.10.0');
       });
 
       describe('event processor configuration', function () {
diff --git a/packages/optimizely-sdk/lib/index.react_native.tests.js b/packages/optimizely-sdk/lib/index.react_native.tests.js
index 55736a49b..b2f136abb 100644
--- a/packages/optimizely-sdk/lib/index.react_native.tests.js
+++ b/packages/optimizely-sdk/lib/index.react_native.tests.js
@@ -89,7 +89,7 @@ describe('javascript-sdk/react-native', function () {
         optlyInstance.onReady().catch(function () {});
 
         assert.instanceOf(optlyInstance, Optimizely);
-        assert.equal(optlyInstance.clientVersion, '4.9.4');
+        assert.equal(optlyInstance.clientVersion, '4.10.0');
       });
 
       it('should set the React Native JS client engine and javascript SDK version', function () {
diff --git a/packages/optimizely-sdk/lib/utils/enums/index.ts b/packages/optimizely-sdk/lib/utils/enums/index.ts
index c7d6f4635..6b46b8646 100644
--- a/packages/optimizely-sdk/lib/utils/enums/index.ts
+++ b/packages/optimizely-sdk/lib/utils/enums/index.ts
@@ -180,8 +180,8 @@ export const NODE_CLIENT_ENGINE = 'node-sdk';
 export const REACT_CLIENT_ENGINE = 'react-sdk';
 export const REACT_NATIVE_CLIENT_ENGINE = 'react-native-sdk';
 export const REACT_NATIVE_JS_CLIENT_ENGINE = 'react-native-js-sdk';
-export const BROWSER_CLIENT_VERSION = '4.9.4';
-export const NODE_CLIENT_VERSION = '4.9.4';
+export const BROWSER_CLIENT_VERSION = '4.10.0';
+export const NODE_CLIENT_VERSION = '4.10.0';
 
 export const DECISION_NOTIFICATION_TYPES = {
   AB_TEST: 'ab-test',
diff --git a/packages/optimizely-sdk/package-lock.json b/packages/optimizely-sdk/package-lock.json
index bf00fd8b0..ca6b854f4 100644
--- a/packages/optimizely-sdk/package-lock.json
+++ b/packages/optimizely-sdk/package-lock.json
@@ -1,6 +1,6 @@
 {
   "name": "@optimizely/optimizely-sdk",
-  "version": "4.9.4",
+  "version": "4.10.0",
   "lockfileVersion": 1,
   "requires": true,
   "dependencies": {
diff --git a/packages/optimizely-sdk/package.json b/packages/optimizely-sdk/package.json
index e2eb41a36..500e48c7f 100644
--- a/packages/optimizely-sdk/package.json
+++ b/packages/optimizely-sdk/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@optimizely/optimizely-sdk",
-  "version": "4.9.4",
+  "version": "4.10.0",
   "description": "JavaScript SDK for Optimizely Feature Experimentation, Optimizely Full Stack (legacy), and Optimizely Rollouts",
   "module": "dist/optimizely.browser.es.js",
   "main": "dist/optimizely.node.min.js",