diff --git a/CHANGELOG.md b/CHANGELOG.md
index 680497c..65a1d69 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -5,3 +5,6 @@
 # 2.3.0 - Remove,Contains key methods.
 
 # 3.0.0 - GetAll,Clear, Save object,getObject,OnConflict Strategy
+
+
+# 5.0.6 - Read,Write optimization
\ No newline at end of file
diff --git a/bin/main.dart b/bin/main.dart
index 87b6568..ee5e2fb 100644
--- a/bin/main.dart
+++ b/bin/main.dart
@@ -21,16 +21,15 @@ void main(List<String> args) async {
   await preferences.setDouble('weight', 18.5);
   await preferences.setBool('isFree', false);
 
-  await preferences.contains('isFree'); //true
+  preferences.contains('isFree'); //true
   await preferences.remove('isFree');
-  await preferences.contains('isFree'); //false
+  preferences.contains('isFree'); //false
 
   //Save writable object
   await preferences.saveObject(User(name: 'averageName', age: 12));
 
   //get writable object
-  final object =
-      await preferences.getObject('averageName', (map) => User.fromJson(map));
+  final object = preferences.getObject('averageName', (map) => User.fromJson(map));
   print(object?.name);
   print(object?.age);
 
diff --git a/pubspec.yaml b/pubspec.yaml
index a12c6c1..942546b 100644
--- a/pubspec.yaml
+++ b/pubspec.yaml
@@ -1,6 +1,6 @@
 name: jt_preferences
 description: Json based key-value storage with AES encryption support. Supported data types are `int`, `double`, `bool`, `String` and `Writable object`.
-version: 4.0.6
+version: 5.0.6
 homepage: "https://github.com/xaldarof/jt_preferences"
 
 environment: