diff --git a/CHANGELOG.md b/CHANGELOG.md
index 79621887..eabd7a6a 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,6 @@
+## 5.3.0
+* Added function to sync the user's historical data.
+
 ## 5.2.0
 * Added a function to enable Qonversion SDK Kids mode via the builder on Android. With this mode activated, our SDK does not collect any information that violates Google Children’s Privacy Policy.
 * Fixed possible rare ANR (Application Not Responding) errors during Facebook Attribution collection on Android.
diff --git a/android/build.gradle b/android/build.gradle
index eaf557bb..44361e75 100644
--- a/android/build.gradle
+++ b/android/build.gradle
@@ -43,6 +43,6 @@ android {
 
 dependencies {
     implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk7:$kotlin_version"
-    implementation "io.qonversion.sandwich:sandwich:1.3.1"
+    implementation "io.qonversion.sandwich:sandwich:1.4.0"
     implementation 'com.google.code.gson:gson:2.9.0'
 }
diff --git a/android/src/main/kotlin/com/qonversion/flutter/sdk/qonversion_flutter_sdk/QonversionPlugin.kt b/android/src/main/kotlin/com/qonversion/flutter/sdk/qonversion_flutter_sdk/QonversionPlugin.kt
index 7e084fe2..b5935bb0 100644
--- a/android/src/main/kotlin/com/qonversion/flutter/sdk/qonversion_flutter_sdk/QonversionPlugin.kt
+++ b/android/src/main/kotlin/com/qonversion/flutter/sdk/qonversion_flutter_sdk/QonversionPlugin.kt
@@ -87,6 +87,10 @@ class QonversionPlugin : MethodCallHandler, FlutterPlugin, ActivityAware {
     override fun onMethodCall(call: MethodCall, result: Result) {
         // Methods without args
         when (call.method) {
+            "syncHistoricalData" -> {
+                qonversionSandwich.syncHistoricalData()
+                return result.success(null)
+            }
             "products" -> {
                 return products(result)
             }
diff --git a/fastlane/report.xml b/fastlane/report.xml
index 0592561b..dcaa8920 100644
--- a/fastlane/report.xml
+++ b/fastlane/report.xml
@@ -4,20 +4,5 @@
     
     
     
-      
-      <testcase classname="fastlane.lanes" name="0: last_git_tag" time="0.034102">
-        
-      </testcase>
-    
-      
-      <testcase classname="fastlane.lanes" name="1: add_git_tag" time="0.013466">
-        
-      </testcase>
-    
-      
-      <testcase classname="fastlane.lanes" name="2: push_git_tags" time="1.422877">
-        
-      </testcase>
-    
   </testsuite>
 </testsuites>
diff --git a/ios/Classes/SwiftQonversionPlugin.swift b/ios/Classes/SwiftQonversionPlugin.swift
index 8d3372d0..00a37aaa 100644
--- a/ios/Classes/SwiftQonversionPlugin.swift
+++ b/ios/Classes/SwiftQonversionPlugin.swift
@@ -44,6 +44,10 @@ public class SwiftQonversionPlugin: NSObject, FlutterPlugin {
     // MARK: - Calls without arguments
     
     switch (call.method) {
+    case "syncHistoricalData":
+        qonversionSandwich?.syncHistoricalData()
+        return result(nil)
+
     case "products":
       return products(result)
       
diff --git a/ios/qonversion_flutter.podspec b/ios/qonversion_flutter.podspec
index c8529a11..73f502eb 100644
--- a/ios/qonversion_flutter.podspec
+++ b/ios/qonversion_flutter.podspec
@@ -16,7 +16,7 @@ Pod::Spec.new do |s|
   s.source_files = 'Classes/**/*'
   s.dependency 'Flutter'
   s.platform = :ios, '9.0'
-  s.dependency "QonversionSandwich", "1.3.1"
+  s.dependency "QonversionSandwich", "1.4.0"
 
   # Flutter.framework does not contain a i386 slice. Only x86_64 simulators are supported.
   s.pod_target_xcconfig = { 'DEFINES_MODULE' => 'YES', 'VALID_ARCHS[sdk=iphonesimulator*]' => 'x86_64' }
diff --git a/lib/src/internal/constants.dart b/lib/src/internal/constants.dart
index 88b6688b..7d4052cc 100644
--- a/lib/src/internal/constants.dart
+++ b/lib/src/internal/constants.dart
@@ -28,6 +28,7 @@ class Constants {
 
   // MethodChannel methods names
   static const mInitialize = 'initialize';
+  static const mSyncHistoricalData = 'syncHistoricalData';
   static const mProducts = 'products';
   static const mPurchase = 'purchase';
   static const mPurchaseProduct = 'purchaseProduct';
diff --git a/lib/src/internal/qonversion_internal.dart b/lib/src/internal/qonversion_internal.dart
index b2382837..0fdae8fe 100644
--- a/lib/src/internal/qonversion_internal.dart
+++ b/lib/src/internal/qonversion_internal.dart
@@ -11,7 +11,7 @@ import 'package:qonversion_flutter/src/internal/utils/string.dart';
 import 'constants.dart';
 
 class QonversionInternal implements Qonversion {
-  static const String _sdkVersion = "5.2.0";
+  static const String _sdkVersion = "5.3.0";
 
   final MethodChannel _channel = MethodChannel('qonversion_plugin');
 
@@ -52,6 +52,9 @@ class QonversionInternal implements Qonversion {
   Stream<String> get promoPurchasesStream =>
       _promoPurchasesEventChannel.receiveBroadcastStream().cast<String>();
 
+  @override
+  Future<void> syncHistoricalData() => _channel.invokeMethod(Constants.mSyncHistoricalData);
+
   @override
   Future<Map<String, QEntitlement>> purchase(String productId) async {
     try {
diff --git a/lib/src/qonversion.dart b/lib/src/qonversion.dart
index 1022a901..95ec04a0 100644
--- a/lib/src/qonversion.dart
+++ b/lib/src/qonversion.dart
@@ -43,6 +43,9 @@ abstract class Qonversion {
   /// Returns App Store product ID
   Stream<String> get promoPurchasesStream;
 
+  /// Call this function to sync the subscriber data with the first launch when Qonversion is implemented.
+  Future<void> syncHistoricalData();
+
   /// Starts a process of purchasing product with [productId].
   ///
   /// Throws [QPurchaseException] in case of error in purchase flow.
diff --git a/macos/Classes/SwiftQonversionPlugin.swift b/macos/Classes/SwiftQonversionPlugin.swift
index 07b3bf22..36903f1e 100644
--- a/macos/Classes/SwiftQonversionPlugin.swift
+++ b/macos/Classes/SwiftQonversionPlugin.swift
@@ -35,6 +35,10 @@ public class SwiftQonversionPlugin: NSObject, FlutterPlugin {
     // MARK: - Calls without arguments
 
     switch (call.method) {
+    case "syncHistoricalData":
+        qonversionSandwich?.syncHistoricalData()
+        return result(nil)
+
     case "products":
       return products(result)
 
diff --git a/macos/qonversion_flutter.podspec b/macos/qonversion_flutter.podspec
index 9741df81..d2d369b8 100644
--- a/macos/qonversion_flutter.podspec
+++ b/macos/qonversion_flutter.podspec
@@ -16,7 +16,7 @@ Pod::Spec.new do |s|
   s.source_files = 'Classes/**/*'
   s.dependency 'FlutterMacOS'
   s.platform = :osx, '10.12'
-  s.dependency "QonversionSandwich", "1.3.1"
+  s.dependency "QonversionSandwich", "1.4.0"
 
   s.pod_target_xcconfig = { 'DEFINES_MODULE' => 'YES' }
   s.swift_version = '5.0'
diff --git a/pubspec.yaml b/pubspec.yaml
index 601da0fc..a412a29d 100644
--- a/pubspec.yaml
+++ b/pubspec.yaml
@@ -1,6 +1,6 @@
 name: qonversion_flutter
 description: Flutter plugin to implement in-app subscriptions and purchases. Validate user receipts and manage cross-platform access to paid content on your app. Android & iOS.
-version: 5.2.0
+version: 5.3.0
 homepage: 'https://qonversion.io'
 repository: 'https://github.com/qonversion/flutter-sdk'