diff --git a/lib/src/data/network_manager.dart b/lib/src/data/network_manager.dart
index f6740d4..946594e 100644
--- a/lib/src/data/network_manager.dart
+++ b/lib/src/data/network_manager.dart
@@ -2,9 +2,12 @@ import 'package:data_connection_checker/data_connection_checker.dart';
 
 import '../domain/inetwork_manager.dart';
 
+///Implementation of NetworkManager
 class NetworkManager implements INetworkManager {
+  ///NetworkManager recive a connection Checker
   NetworkManager(this.connectionChecker);
 
+  /// Access to connectionChecker properties
   final DataConnectionChecker connectionChecker;
 
   @override
diff --git a/lib/src/domain/inetwork_manager.dart b/lib/src/domain/inetwork_manager.dart
index 45d3291..1ec9a05 100644
--- a/lib/src/domain/inetwork_manager.dart
+++ b/lib/src/domain/inetwork_manager.dart
@@ -1,3 +1,5 @@
+/// Interface for Network Manager
 abstract class INetworkManager {
+  /// Future that returns true if there is internet connection
   Future<bool> get isConnected;
 }
diff --git a/pubspec.yaml b/pubspec.yaml
index 17527b9..d41a81b 100644
--- a/pubspec.yaml
+++ b/pubspec.yaml
@@ -1,18 +1,19 @@
 name: network_manager
 description: Dart package which manages data connection.
-version: 1.0.0
+version: 2.0.0
 # homepage: https://www.example.com
-
 environment:
-  sdk: ">=2.10.0 <3.0.0"
+  sdk: ">=2.12.0 <3.0.0"
 
 dependencies:
-  data_connection_checker: ^0.3.4
+  data_connection_checker:
+    git:
+      url: git://github.com/uSlashVlad/data_connection_checker.git
   equatable: ^2.0.0
-  meta: ^1.1.8
-  path: ^1.7.0
+  meta: ^1.3.0
+  path: ^1.8.0
 
 dev_dependencies:
-  mockito: ^5.0.3
-  test: ^1.14.4
+  mocktail: ^0.1.1
+  test: ^1.16.8
   very_good_analysis: ^2.0.0
diff --git a/test/network_manager_test.dart b/test/network_manager_test.dart
index 4c4c418..5c63eda 100644
--- a/test/network_manager_test.dart
+++ b/test/network_manager_test.dart
@@ -1,4 +1,4 @@
-import 'package:mockito/mockito.dart';
+import 'package:mocktail/mocktail.dart';
 import 'package:test/test.dart';
 
 import 'package:network_manager/network_manager.dart';
@@ -6,8 +6,8 @@ import 'package:network_manager/network_manager.dart';
 class MockDataConnectionChecker extends Mock implements DataConnectionChecker {}
 
 void main() {
-  NetworkManager networkInfo;
-  MockDataConnectionChecker dataConnectionChecker;
+  late NetworkManager networkInfo;
+  late MockDataConnectionChecker dataConnectionChecker;
 
   setUp(() {
     dataConnectionChecker = MockDataConnectionChecker();
@@ -22,14 +22,14 @@ void main() {
         final tIsConnected = Future.value(true);
 
         when(
-          dataConnectionChecker.hasConnection,
+          () => dataConnectionChecker.hasConnection,
         ).thenAnswer((_) => tIsConnected);
 
         // side effects -> collect the result to test
         final result = networkInfo.isConnected;
 
         // expectations -> compare result to expected value
-        verify(dataConnectionChecker.hasConnection);
+        verify(() => dataConnectionChecker.hasConnection);
         expect(result, tIsConnected);
       },
     );