diff --git a/Adjust/AdjustConfig2dx.cpp b/Adjust/AdjustConfig2dx.cpp
index 2a142af0..2e9cf239 100755
--- a/Adjust/AdjustConfig2dx.cpp
+++ b/Adjust/AdjustConfig2dx.cpp
@@ -96,7 +96,7 @@ static int fileReadCallback(const char* fileName, int* size) {
 #endif
 
 void AdjustConfig2dx::initConfig(std::string appToken, std::string environment, bool allowSuppressLogLevel) {
-    std::string sdkPrefix = "cocos2d-x4.11.2";
+    std::string sdkPrefix = "cocos2d-x4.11.3";
     
 #if (CC_TARGET_PLATFORM == CC_PLATFORM_ANDROID)
     cocos2d::JniMethodInfo miInit;
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 5e0c3f79..8063efa0 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,15 +1,30 @@
+### Version 4.11.3 (28th September 2017)
+#### Added
+- **[iOS]** Improved iOS 11 support.
+
+#### Changed
+- **[iOS]** Removed iOS connection validity checks.
+- **[iOS]** Updated native iOS SDK to version **4.11.5**.
+
+#### Native SDKs
+- **[iOS]** [iOS SDK 4.11.5][ios_sdk_v4.11.5]
+- **[AND]** [Android SDK 4.11.4][android_sdk_v4.11.4]
+- **[WIN]** [Windows SDK 4.0.3][windows_sdk_v4.0.3]
+ 
+ ---
+
 ### Version 4.11.2 (19th May 2017)
 #### Added
-- **[IOS][AND]** Added check if `sdk_click` package response contains attribution information.
-- **[IOS][AND]** Added sending of attributable parameters with every `sdk_click` package.
+- **[iOS][AND]** Added check if `sdk_click` package response contains attribution information.
+- **[iOS][AND]** Added sending of attributable parameters with every `sdk_click` package.
 
 #### Changed
-- **[IOS][AND]** Replaced `assert` level logs with `warn` level.
+- **[iOS][AND]** Replaced `assert` level logs with `warn` level.
 
 #### Native SDKs
 - **[iOS]** [iOS SDK 4.11.4][ios_sdk_v4.11.4]
 - **[AND]** [Android SDK 4.11.4][android_sdk_v4.11.4]
-- **[WIN]** [Windows@4.0.3][windows_sdk_v4.0.3]
+- **[WIN]** [Windows SDK 4.0.3][windows_sdk_v4.0.3]
 
 ---
 
@@ -37,7 +52,7 @@
 #### Native SDKs
 - **[iOS]** [iOS SDK 4.11.3][ios_sdk_v4.11.3]
 - **[AND]** [Android SDK 4.11.3][android_sdk_v4.11.3]
-- **[WIN]** [Windows@4.0.3][windows_sdk_v4.0.3]
+- **[WIN]** [Windows SDK 4.0.3][windows_sdk_v4.0.3]
 
 ---
 
@@ -67,7 +82,7 @@
 #### Native SDKs
 - **[iOS]** [iOS SDK 4.11.0][ios_sdk_v4.11.0]
 - **[AND]** [Android SDK 4.11.0][android_sdk_v4.11.0]
-- **[WIN]** [Windows@4.0.3][windows_sdk_v4.0.3]
+- **[WIN]** [Windows SDK 4.0.3][windows_sdk_v4.0.3]
 
 ---
 
@@ -172,6 +187,7 @@
 [ios_sdk_v4.11.0]: https://github.com/adjust/ios_sdk/tree/v4.11.0
 [ios_sdk_v4.11.3]: https://github.com/adjust/ios_sdk/tree/v4.11.3
 [ios_sdk_v4.11.4]: https://github.com/adjust/ios_sdk/tree/v4.11.4
+[ios_sdk_v4.11.5]: https://github.com/adjust/ios_sdk/tree/v4.11.5
 
 [android_sdk_v4.0.8]: https://github.com/adjust/android_sdk/tree/v4.0.8
 [android_sdk_v4.1.0]: https://github.com/adjust/android_sdk/tree/v4.1.0
diff --git a/VERSION b/VERSION
index 4f89fb96..e9fdaa8c 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-4.11.2
+4.11.3
diff --git a/Windows/AdjustUAP10WinRT/AdjustUAP10WinRT/WRTAdjustConfig.cs b/Windows/AdjustUAP10WinRT/AdjustUAP10WinRT/WRTAdjustConfig.cs
index 60a54df2..6189e6c0 100644
--- a/Windows/AdjustUAP10WinRT/AdjustUAP10WinRT/WRTAdjustConfig.cs
+++ b/Windows/AdjustUAP10WinRT/AdjustUAP10WinRT/WRTAdjustConfig.cs
@@ -52,7 +52,7 @@ public WRTAdjustConfig(string appToken, string environment)
         {
             this.appToken = appToken;
             this.environment = environment;
-            this.sdkPrefix = "cocos2d-x4.11.2";
+            this.sdkPrefix = "cocos2d-x4.11.3";
             
             this.logLevel = LogLevel.Info;
 
diff --git a/Windows/AdjustWP81WinRT/AdjustWP81WinRT/WRTAdjustConfig.cs b/Windows/AdjustWP81WinRT/AdjustWP81WinRT/WRTAdjustConfig.cs
index 60a54df2..6189e6c0 100644
--- a/Windows/AdjustWP81WinRT/AdjustWP81WinRT/WRTAdjustConfig.cs
+++ b/Windows/AdjustWP81WinRT/AdjustWP81WinRT/WRTAdjustConfig.cs
@@ -52,7 +52,7 @@ public WRTAdjustConfig(string appToken, string environment)
         {
             this.appToken = appToken;
             this.environment = environment;
-            this.sdkPrefix = "cocos2d-x4.11.2";
+            this.sdkPrefix = "cocos2d-x4.11.3";
             
             this.logLevel = LogLevel.Info;
 
diff --git a/Windows/AdjustWS81WinRT/AdjustWS81WinRT/WRTAdjustConfig.cs b/Windows/AdjustWS81WinRT/AdjustWS81WinRT/WRTAdjustConfig.cs
index 60a54df2..6189e6c0 100644
--- a/Windows/AdjustWS81WinRT/AdjustWS81WinRT/WRTAdjustConfig.cs
+++ b/Windows/AdjustWS81WinRT/AdjustWS81WinRT/WRTAdjustConfig.cs
@@ -52,7 +52,7 @@ public WRTAdjustConfig(string appToken, string environment)
         {
             this.appToken = appToken;
             this.environment = environment;
-            this.sdkPrefix = "cocos2d-x4.11.2";
+            this.sdkPrefix = "cocos2d-x4.11.3";
             
             this.logLevel = LogLevel.Info;
 
diff --git a/doc/migrate.md b/doc/migrate.md
index edb1f28f..59df42cd 100644
--- a/doc/migrate.md
+++ b/doc/migrate.md
@@ -1,4 +1,4 @@
-## Migrate your adjust SDK for Cocos2d-x to 4.11.2 from 4.0.x
+## Migrate your adjust SDK for Cocos2d-x to 4.11.3 from 4.0.x
 
 ### SDK initialization
 
diff --git a/ext/iOS/sdk b/ext/iOS/sdk
index 686d8c77..85e1dc21 160000
--- a/ext/iOS/sdk
+++ b/ext/iOS/sdk
@@ -1 +1 @@
-Subproject commit 686d8c771d3778e8b0cf2558e1299af945df2dda
+Subproject commit 85e1dc21fac8bc7d6946a72c3af0a3d786c5270c
diff --git a/iOS/AdjustSdk.framework/Versions/A/AdjustSdk b/iOS/AdjustSdk.framework/Versions/A/AdjustSdk
index b97b7d0c..6269db44 100644
Binary files a/iOS/AdjustSdk.framework/Versions/A/AdjustSdk and b/iOS/AdjustSdk.framework/Versions/A/AdjustSdk differ
diff --git a/iOS/AdjustSdk.framework/Versions/A/Headers/Adjust.h b/iOS/AdjustSdk.framework/Versions/A/Headers/Adjust.h
index 3ca9b626..d96ef5a8 100644
--- a/iOS/AdjustSdk.framework/Versions/A/Headers/Adjust.h
+++ b/iOS/AdjustSdk.framework/Versions/A/Headers/Adjust.h
@@ -2,7 +2,7 @@
 //  Adjust.h
 //  Adjust
 //
-//  V4.11.4
+//  V4.11.5
 //  Created by Christian Wellenbrock on 2012-07-23.
 //  Copyright (c) 2012-2014 adjust GmbH. All rights reserved.
 //