diff --git a/CHANGELOG.md b/CHANGELOG.md
index d4c6970..d9dbedb 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,7 @@
+## [2.0.0] - Release
+
+ * Added null safety 
+
 ## [1.2.1] - Release
 
  * Improve code document
diff --git a/lib/src/app_bar.dart b/lib/src/app_bar.dart
index ff7a42e..09e590c 100644
--- a/lib/src/app_bar.dart
+++ b/lib/src/app_bar.dart
@@ -19,14 +19,16 @@ class SliderAppBar extends StatelessWidget {
   const SliderAppBar(
       {Key? key,
       this.appBarPadding = const EdgeInsets.only(top: 24),
-      this.appBarColor = Colors.blue, this.drawerIcon,
+      this.appBarColor = Colors.blue,
+      this.drawerIcon,
       this.splashColor = Colors.black,
       this.drawerIconColor = Colors.black87,
       this.drawerIconSize = 27,
       required this.animationController,
       required this.onTap,
       required this.title,
-      required this.isTitleCenter, this.trailing,
+      required this.isTitleCenter,
+      this.trailing,
       required this.slideDirection,
       required this.appBarHeight})
       : super(key: key);
diff --git a/pubspec.yaml b/pubspec.yaml
index 1efe40c..4b6981e 100644
--- a/pubspec.yaml
+++ b/pubspec.yaml
@@ -1,6 +1,6 @@
 name: flutter_slider_drawer
 description: A Flutter package with custom implementation of the Slider Drawer Menu
-version: 1.2.1
+version: 2.0.0
 homepage: https://github.com/NikhilVadoliya/Flutter_slider_drawer
 
 environment: