diff --git a/CHANGELOG.md b/CHANGELOG.md
index a6d5747..8a9554d 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,3 @@
-## 1.6.40
+## 1.6.41
 
-- update: version upgrade in class
\ No newline at end of file
+- update: added updatePostbackConversion function in iOS
\ No newline at end of file
diff --git a/README.md b/README.md
index 744baec..503d311 100644
--- a/README.md
+++ b/README.md
@@ -43,7 +43,7 @@ You can add the flutter sdk in two ways:-
 
 ```
 dependencies:
-  trackier_sdk_flutter: ^1.6.40
+  trackier_sdk_flutter: ^1.6.41
 ```
 
 2. By using cli command. you need to run the below command in `terminal/cmd`.
diff --git a/android/src/main/kotlin/com/example/trackierfluttersdk/TrackierfluttersdkPlugin.kt b/android/src/main/kotlin/com/example/trackierfluttersdk/TrackierfluttersdkPlugin.kt
index fd6631b..33a6450 100644
--- a/android/src/main/kotlin/com/example/trackierfluttersdk/TrackierfluttersdkPlugin.kt
+++ b/android/src/main/kotlin/com/example/trackierfluttersdk/TrackierfluttersdkPlugin.kt
@@ -89,7 +89,7 @@ class TrackierfluttersdkPlugin : FlutterPlugin, MethodCallHandler {
             environment = configMap.get("environment") as String
         }
         trackierSDKConfig = TrackierSDKConfig(context, appToken, environment)
-        trackierSDKConfig.setSDKVersion("1.6.40")
+        trackierSDKConfig.setSDKVersion("1.6.41")
         trackierSDKConfig.setSDKType("flutter_sdk")
         trackierSDKConfig.setAppSecret(secretId, secretKey)
     
diff --git a/example/lib/main.dart b/example/lib/main.dart
index 18f8e21..7c31a44 100644
--- a/example/lib/main.dart
+++ b/example/lib/main.dart
@@ -33,6 +33,7 @@ class _MyAppState extends State<MyApp> {
     trackerSDKConfig.deferredDeeplinkCallback = (uri){
       print('The value of deeplinkUrl is: $uri');
     };
+    Trackierfluttersdk.updatePostbackConversion(0);
     Trackierfluttersdk.setUserId("737263"); //Pass your userid
     Trackierfluttersdk.setUserEmail("userEmail@gmail.com");
 
diff --git a/ios/Classes/SwiftTrackierfluttersdkPlugin.swift b/ios/Classes/SwiftTrackierfluttersdkPlugin.swift
index d098956..694fca3 100644
--- a/ios/Classes/SwiftTrackierfluttersdkPlugin.swift
+++ b/ios/Classes/SwiftTrackierfluttersdkPlugin.swift
@@ -39,6 +39,9 @@ public class SwiftTrackierfluttersdkPlugin: NSObject, FlutterPlugin, DeepLinkLis
 		} else if (call.method == "setUserAdditonalDetail") {
 			let dict = call.arguments as? [String:Any]
 			if (dict != nil) { setUserAdditionalDetails(dict: dict!) }
+		} else if (call.method == "updatePostbackConversion") {
+			let dict = call.arguments as? Int
+			if (dict != nil) { updatePostbackConversion(dict: dict!) }
 		} else if (call.method == "initializeSDK") {
 			let dict = call.arguments as? [String:Any]
 			if (dict != nil) { initializeSDK(dict: dict) }
@@ -73,6 +76,11 @@ public class SwiftTrackierfluttersdkPlugin: NSObject, FlutterPlugin, DeepLinkLis
 		TrackierSDK.setUserAdditionalDetails(userAdditionalDetails: userAdditionalDetails);
 	}
 	
+	func updatePostbackConversion(dict: Int) -> Void {
+		let postbackConversion = dict
+		TrackierSDK.updatePostbackConversion(conversionValue: postbackConversion)
+	}
+	
 	func initializeSDK(dict: Optional<Dictionary<String, Any>>) -> Void {
 		let appToken = "\(dict?["appToken"] as? String ?? "")"
 		let environment = "\(dict?["environment"] as? String ?? "")"
@@ -81,7 +89,7 @@ public class SwiftTrackierfluttersdkPlugin: NSObject, FlutterPlugin, DeepLinkLis
 		let deeplinkKey = "\(dict?["deeplinkCallback"] as? String ?? "")"
 		let config = TrackierSDKConfig(appToken: appToken , env: environment)
 		config.setAppSecret(secretId: secretId, secretKey: secretKey)
-		config.setSDKVersion(sdkVersion: "1.6.40")
+		config.setSDKVersion(sdkVersion: "1.6.41")
 		if (!deeplinkKey.isEmpty) {
 			config.setDeeplinkListerner(listener: self)
 		}
diff --git a/lib/trackierfluttersdk.dart b/lib/trackierfluttersdk.dart
index 5e5023c..d5d9ec5 100644
--- a/lib/trackierfluttersdk.dart
+++ b/lib/trackierfluttersdk.dart
@@ -1,4 +1,5 @@
 import 'dart:async';
+import 'dart:ffi';
 import 'package:flutter/services.dart';
 import 'package:trackier_sdk_flutter/trackierevent.dart';
 import 'trackierconfig.dart';
@@ -40,6 +41,10 @@ class Trackierfluttersdk {
     _channel.invokeMethod('setUserName', userName);
   }
 
+  static void updatePostbackConversion(int conversion) {
+    _channel.invokeMethod('updatePostbackConversion', conversion);
+  }
+
   static void setUserAdditonalDetail(Map userAdditonalDetail) {
     _channel.invokeMethod('setUserAdditonalDetail', userAdditonalDetail);
   }
diff --git a/pubspec.yaml b/pubspec.yaml
index ea2c6cb..af0d10a 100644
--- a/pubspec.yaml
+++ b/pubspec.yaml
@@ -1,6 +1,6 @@
 name: trackier_sdk_flutter
 description: This is trackier flutter SDK
-version: 1.6.40
+version: 1.6.41
 homepage: https://github.com/trackier/flutter-sdk
 
 environment: