diff --git a/CHANGELOG.md b/CHANGELOG.md
index 8128bb4..800c299 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,8 @@
+## [1.3.7] - 01.Oct.2022.
+- update dependency packages to newest versions
+- update sdk to work with the newest packages
+- fix example app build
+
 ## [1.3.6] - 30.Sep.2022.
 - update sep-005 - add support for malay language
 - update sep-001 - add new fields
diff --git a/README.md b/README.md
index 2a53b7b..bea5b54 100644
--- a/README.md
+++ b/README.md
@@ -11,7 +11,7 @@ The Soneso open source Stellar SDK for Flutter is build with Dart and provides A
 1. Add the dependency to your pubspec.yaml file:
 ```
 dependencies:
-  stellar_flutter_sdk: ^1.3.6
+  stellar_flutter_sdk: ^1.3.7
 ```
 2. Install it (command line or IDE):
 ```
diff --git a/example/android/app/build.gradle b/example/android/app/build.gradle
index 320be22..5c942a9 100644
--- a/example/android/app/build.gradle
+++ b/example/android/app/build.gradle
@@ -8,7 +8,7 @@ if (localPropertiesFile.exists()) {
 
 def flutterRoot = localProperties.getProperty('flutter.sdk')
 if (flutterRoot == null) {
-    throw new GradleException("Flutter SDK not found. Define location with flutter.sdk in the local.properties file.")
+    throw new FileNotFoundException("Flutter SDK not found. Define location with flutter.sdk in the local.properties file.")
 }
 
 def flutterVersionCode = localProperties.getProperty('flutter.versionCode')
@@ -26,7 +26,7 @@ apply plugin: 'kotlin-android'
 apply from: "$flutterRoot/packages/flutter_tools/gradle/flutter.gradle"
 
 android {
-    compileSdkVersion 28
+    compileSdkVersion 31
 
     sourceSets {
         main.java.srcDirs += 'src/main/kotlin'
@@ -40,7 +40,7 @@ android {
         // TODO: Specify your own unique Application ID (https://developer.android.com/studio/build/application-id.html).
         applicationId "com.example.example"
         minSdkVersion 16
-        targetSdkVersion 28
+        targetSdkVersion 31
         versionCode flutterVersionCode.toInteger()
         versionName flutterVersionName
     }
diff --git a/example/android/app/src/main/AndroidManifest.xml b/example/android/app/src/main/AndroidManifest.xml
index 55ca830..1e4a566 100644
--- a/example/android/app/src/main/AndroidManifest.xml
+++ b/example/android/app/src/main/AndroidManifest.xml
@@ -6,7 +6,7 @@
          additional functionality it is fine to subclass or reimplement
          FlutterApplication and put your custom class here. -->
     <application
-        android:name="io.flutter.app.FlutterApplication"
+        android:name="${applicationName}"
         android:label="example"
         android:icon="@mipmap/ic_launcher">
         <activity
@@ -15,6 +15,7 @@
             android:theme="@style/LaunchTheme"
             android:configChanges="orientation|keyboardHidden|keyboard|screenSize|smallestScreenSize|locale|layoutDirection|fontScale|screenLayout|density|uiMode"
             android:hardwareAccelerated="true"
+            android:exported="true"
             android:windowSoftInputMode="adjustResize">
             <!-- Specifies an Android theme to apply to this Activity as soon as
                  the Android process has started. This theme is visible to the user
diff --git a/example/android/build.gradle b/example/android/build.gradle
index 3100ad2..a0728b8 100644
--- a/example/android/build.gradle
+++ b/example/android/build.gradle
@@ -1,12 +1,12 @@
 buildscript {
-    ext.kotlin_version = '1.3.50'
+    ext.kotlin_version = '1.7.0'
     repositories {
         google()
-        jcenter()
+        mavenCentral()
     }
 
     dependencies {
-        classpath 'com.android.tools.build:gradle:3.5.0'
+        classpath 'com.android.tools.build:gradle:4.2.2'
         classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
     }
 }
@@ -14,7 +14,7 @@ buildscript {
 allprojects {
     repositories {
         google()
-        jcenter()
+        mavenCentral()
     }
 }
 
diff --git a/example/android/gradle.properties b/example/android/gradle.properties
index 38c8d45..a5965ab 100644
--- a/example/android/gradle.properties
+++ b/example/android/gradle.properties
@@ -1,4 +1,4 @@
 org.gradle.jvmargs=-Xmx1536M
 android.enableR8=true
 android.useAndroidX=true
-android.enableJetifier=true
+android.enableJetifier=true
\ No newline at end of file
diff --git a/example/android/gradle/wrapper/gradle-wrapper.properties b/example/android/gradle/wrapper/gradle-wrapper.properties
index 296b146..752ce5b 100644
--- a/example/android/gradle/wrapper/gradle-wrapper.properties
+++ b/example/android/gradle/wrapper/gradle-wrapper.properties
@@ -3,4 +3,4 @@ distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-5.6.2-all.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-7.3-all.zip
diff --git a/example/ios/Flutter/AppFrameworkInfo.plist b/example/ios/Flutter/AppFrameworkInfo.plist
index 6b4c0f7..4f8d4d2 100644
--- a/example/ios/Flutter/AppFrameworkInfo.plist
+++ b/example/ios/Flutter/AppFrameworkInfo.plist
@@ -21,6 +21,6 @@
   <key>CFBundleVersion</key>
   <string>1.0</string>
   <key>MinimumOSVersion</key>
-  <string>8.0</string>
+  <string>11.0</string>
 </dict>
 </plist>
diff --git a/example/ios/Runner.xcodeproj/project.pbxproj b/example/ios/Runner.xcodeproj/project.pbxproj
index d59cc08..f683e9f 100644
--- a/example/ios/Runner.xcodeproj/project.pbxproj
+++ b/example/ios/Runner.xcodeproj/project.pbxproj
@@ -3,7 +3,7 @@
 	archiveVersion = 1;
 	classes = {
 	};
-	objectVersion = 46;
+	objectVersion = 50;
 	objects = {
 
 /* Begin PBXBuildFile section */
@@ -135,7 +135,7 @@
 		97C146E61CF9000F007C117D /* Project object */ = {
 			isa = PBXProject;
 			attributes = {
-				LastUpgradeCheck = 1020;
+				LastUpgradeCheck = 1300;
 				ORGANIZATIONNAME = "";
 				TargetAttributes = {
 					97C146ED1CF9000F007C117D = {
@@ -280,7 +280,7 @@
 				GCC_WARN_UNINITIALIZED_AUTOS = YES_AGGRESSIVE;
 				GCC_WARN_UNUSED_FUNCTION = YES;
 				GCC_WARN_UNUSED_VARIABLE = YES;
-				IPHONEOS_DEPLOYMENT_TARGET = 8.0;
+				IPHONEOS_DEPLOYMENT_TARGET = 11.0;
 				MTL_ENABLE_DEBUG_INFO = NO;
 				SDKROOT = iphoneos;
 				SUPPORTED_PLATFORMS = iphoneos;
@@ -362,7 +362,7 @@
 				GCC_WARN_UNINITIALIZED_AUTOS = YES_AGGRESSIVE;
 				GCC_WARN_UNUSED_FUNCTION = YES;
 				GCC_WARN_UNUSED_VARIABLE = YES;
-				IPHONEOS_DEPLOYMENT_TARGET = 8.0;
+				IPHONEOS_DEPLOYMENT_TARGET = 11.0;
 				MTL_ENABLE_DEBUG_INFO = YES;
 				ONLY_ACTIVE_ARCH = YES;
 				SDKROOT = iphoneos;
@@ -411,7 +411,7 @@
 				GCC_WARN_UNINITIALIZED_AUTOS = YES_AGGRESSIVE;
 				GCC_WARN_UNUSED_FUNCTION = YES;
 				GCC_WARN_UNUSED_VARIABLE = YES;
-				IPHONEOS_DEPLOYMENT_TARGET = 8.0;
+				IPHONEOS_DEPLOYMENT_TARGET = 11.0;
 				MTL_ENABLE_DEBUG_INFO = NO;
 				SDKROOT = iphoneos;
 				SUPPORTED_PLATFORMS = iphoneos;
diff --git a/example/ios/Runner.xcodeproj/project.xcworkspace/contents.xcworkspacedata b/example/ios/Runner.xcodeproj/project.xcworkspace/contents.xcworkspacedata
index 1d526a1..919434a 100644
--- a/example/ios/Runner.xcodeproj/project.xcworkspace/contents.xcworkspacedata
+++ b/example/ios/Runner.xcodeproj/project.xcworkspace/contents.xcworkspacedata
@@ -2,6 +2,6 @@
 <Workspace
    version = "1.0">
    <FileRef
-      location = "group:Runner.xcodeproj">
+      location = "self:">
    </FileRef>
 </Workspace>
diff --git a/example/ios/Runner.xcodeproj/xcshareddata/xcschemes/Runner.xcscheme b/example/ios/Runner.xcodeproj/xcshareddata/xcschemes/Runner.xcscheme
index a28140c..3db53b6 100644
--- a/example/ios/Runner.xcodeproj/xcshareddata/xcschemes/Runner.xcscheme
+++ b/example/ios/Runner.xcodeproj/xcshareddata/xcschemes/Runner.xcscheme
@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <Scheme
-   LastUpgradeVersion = "1020"
+   LastUpgradeVersion = "1300"
    version = "1.3">
    <BuildAction
       parallelizeBuildables = "YES"
diff --git a/example/ios/Runner/Info.plist b/example/ios/Runner/Info.plist
index a060db6..1579fb3 100644
--- a/example/ios/Runner/Info.plist
+++ b/example/ios/Runner/Info.plist
@@ -41,5 +41,7 @@
 	</array>
 	<key>UIViewControllerBasedStatusBarAppearance</key>
 	<false/>
+	<key>CADisableMinimumFrameDurationOnPhone</key>
+	<true/>
 </dict>
 </plist>
diff --git a/lib/src/sep/0011/txrep.dart b/lib/src/sep/0011/txrep.dart
index ae1b24f..abeb486 100644
--- a/lib/src/sep/0011/txrep.dart
+++ b/lib/src/sep/0011/txrep.dart
@@ -276,7 +276,8 @@ class TxRep {
     return transaction.toEnvelopeXdrBase64();
   }
 
-  static TransactionPreconditions _getPreconditions(Map<String, String> map, String prefix) {
+  static TransactionPreconditions _getPreconditions(
+      Map<String, String> map, String prefix) {
     // Preconditions
     TransactionPreconditions cond = TransactionPreconditions();
     String? preonditionsType = _removeComment(map['${prefix}cond.type']);
@@ -304,7 +305,7 @@ class TxRep {
       if (_removeComment(map['${precondPrefix}minSeqNum._present']) == 'true' &&
           map['${precondPrefix}minSeqNum'] != null) {
         int? minSeqNum =
-        int.tryParse(_removeComment(map['${precondPrefix}minSeqNum'])!);
+            int.tryParse(_removeComment(map['${precondPrefix}minSeqNum'])!);
         if (minSeqNum == null) {
           throw Exception('invalid ${precondPrefix}minSeqNum');
         }
@@ -336,7 +337,7 @@ class TxRep {
 
       List<XdrSignerKey>? extraSigners;
       String? extraSignersLen =
-      _removeComment(map['${precondPrefix}extraSigners.len']);
+          _removeComment(map['${precondPrefix}extraSigners.len']);
       if (extraSignersLen == null) {
         throw Exception('missing ${precondPrefix}extraSigners.len');
       }
@@ -1630,7 +1631,8 @@ class TxRep {
           'price denominator can not be 0 in ' + opPrefix + 'price.d');
     }
 
-    Decimal dec = Decimal.parse(n.toString()) / Decimal.parse(d.toString());
+    Decimal dec =
+        (Decimal.parse(n.toString()) / Decimal.parse(d.toString())).toDecimal();
 
     String? offerIdStr = _removeComment(map[opPrefix + 'offerID']);
     if (offerIdStr == null) {
@@ -1731,7 +1733,8 @@ class TxRep {
           'price denominator can not be 0 in ' + opPrefix + 'price.d');
     }
 
-    Decimal dec = Decimal.parse(n.toString()) / Decimal.parse(d.toString());
+    Decimal dec =
+        (Decimal.parse(n.toString()) / Decimal.parse(d.toString())).toDecimal();
 
     String? offerIdStr = _removeComment(map[opPrefix + 'offerID']);
     if (offerIdStr == null) {
@@ -1831,7 +1834,8 @@ class TxRep {
       throw Exception(
           'price denominator can not be 0 in ' + opPrefix + 'price.d');
     }
-    Decimal dec = Decimal.parse(n.toString()) / Decimal.parse(d.toString());
+    Decimal dec =
+        (Decimal.parse(n.toString()) / Decimal.parse(d.toString())).toDecimal();
 
     CreatePassiveSellOfferOperationBuilder builder =
         CreatePassiveSellOfferOperationBuilder(
@@ -2834,7 +2838,8 @@ class TxRep {
   }
 
   static String? _fromAmount(String value) {
-    Decimal amount = Decimal.parse(value) / Decimal.parse('10000000.00');
+    Decimal amount =
+        (Decimal.parse(value) / Decimal.parse('10000000.00')).toDecimal();
     return amount.toString();
   }
 
diff --git a/lib/src/stellar_sdk.dart b/lib/src/stellar_sdk.dart
index f81d479..9ff6a78 100644
--- a/lib/src/stellar_sdk.dart
+++ b/lib/src/stellar_sdk.dart
@@ -29,7 +29,7 @@ import 'requests/liquidity_pools_request_builder.dart';
 
 /// Main class of the flutter stellar sdk.
 class StellarSDK {
-  static const versionNumber = "1.3.6";
+  static const versionNumber = "1.3.7";
 
   static final StellarSDK PUBLIC = StellarSDK("https://horizon.stellar.org");
   static final StellarSDK TESTNET =
diff --git a/pubspec.yaml b/pubspec.yaml
index 0d78c8f..49929a6 100644
--- a/pubspec.yaml
+++ b/pubspec.yaml
@@ -1,6 +1,6 @@
 name: stellar_flutter_sdk
 description: A stellar blockchain sdk that query's horizon, build, signs and submits transactions to the stellar network.
-version: 1.3.6
+version: 1.3.7
 homepage: https://github.com/Soneso/stellar_flutter_sdk
 
 environment:
@@ -10,17 +10,17 @@ dependencies:
   flutter:
     sdk: flutter
 
-  crypto: ^3.0.1
-  fixnum: ^1.0.0
-  http: ^0.13.3
+  crypto: ^3.0.2
+  fixnum: ^1.0.1
+  http: ^0.13.5
   collection: ^1.15.0
-  toml: ^0.11.0
-  pointycastle: ^3.3.1
+  toml: ^0.13.1
+  pointycastle: ^3.6.2
   unorm_dart: ^0.2.0
-  decimal: ^1.3.0
-  pinenacl: ^0.3.3
-  convert: ^3.0.1
-  http_parser: ^4.0.0
+  decimal: ^2.3.0
+  pinenacl: ^0.5.1
+  convert: ^3.0.2
+  http_parser: ^4.0.1
 
 dev_dependencies:
   flutter_test:
diff --git a/test/query_test.dart b/test/query_test.dart
index b8ee479..a07de33 100644
--- a/test/query_test.dart
+++ b/test/query_test.dart
@@ -176,7 +176,7 @@ void main() {
     /// ! get Claimable Balance ID from BID result at claimable_balance_test.dart
     Page<OperationResponse> operationsPage = await sdk.operations
         .forClaimableBalance(
-            "00000000b20be55ee09520b0477a39b5ace644899b0cd7128d61b5de0620cafc8f523cca")
+            "000000009e4ce7ec853a31c6a096ff7bf0d49a39a60bd112f5f73bf44fa92d8e9fbed6f8")
         .limit(1)
         .order(RequestBuilderOrder.DESC)
         .execute();
@@ -189,7 +189,7 @@ void main() {
     /// ! get Claimable Balance ID from BID result at claimable_balance_test.dart
     Page<TransactionResponse> transactionsPage = await sdk.transactions
         .forClaimableBalance(
-            "00000000b20be55ee09520b0477a39b5ace644899b0cd7128d61b5de0620cafc8f523cca")
+            "000000009e4ce7ec853a31c6a096ff7bf0d49a39a60bd112f5f73bf44fa92d8e9fbed6f8")
         .limit(1)
         .order(RequestBuilderOrder.DESC)
         .execute();