diff --git a/CHANGELOG.md b/CHANGELOG.md
index a836456..93511a1 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,7 @@
+## 9.1.5
+* Attempt to fix crash and race conditions in the User Properties manager.
+* Fixed popover presentation style for iPad
+
 ## 9.1.4
 * Added Tenjin AIID property for Tenjin integration
 * The setNotificationToken, handleNotification, and `getNotificationCustomPayload` methods were marked as deprecated.
diff --git a/android/build.gradle b/android/build.gradle
index 8e82417..1b3cd34 100644
--- a/android/build.gradle
+++ b/android/build.gradle
@@ -51,6 +51,6 @@ android {
 
 dependencies {
     implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk7:$kotlin_version"
-    implementation "io.qonversion.sandwich:sandwich:5.1.6"
+    implementation "io.qonversion.sandwich:sandwich:5.1.7"
     implementation 'com.google.code.gson:gson:2.9.0'
 }
diff --git a/ios/qonversion_flutter.podspec b/ios/qonversion_flutter.podspec
index b9a51fc..df9689a 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", "5.1.6"
+  s.dependency "QonversionSandwich", "5.1.7"
 
   # 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/qonversion_internal.dart b/lib/src/internal/qonversion_internal.dart
index 8b2a1a4..93d4e90 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 = "9.1.4";
+  static const String _sdkVersion = "9.1.5";
 
   final MethodChannel _channel = MethodChannel('qonversion_plugin');
 
diff --git a/macos/qonversion_flutter.podspec b/macos/qonversion_flutter.podspec
index bef6a5c..d1898f3 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", "5.1.6"
+  s.dependency "QonversionSandwich", "5.1.7"
 
   s.pod_target_xcconfig = { 'DEFINES_MODULE' => 'YES' }
   s.swift_version = '5.0'
diff --git a/pubspec.yaml b/pubspec.yaml
index 48253f6..f34160b 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: 9.1.4
+version: 9.1.5
 homepage: 'https://qonversion.io'
 repository: 'https://github.com/qonversion/flutter-sdk'