diff --git a/CHANGELOG.md b/CHANGELOG.md
index 17bcab2..b3b363e 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,7 +1,12 @@
+## 2.0.0
+
+- Stable null safety release.
+
 ## 0.0.1
 
 * TODO: Describe initial release.
 
 ## 0.0.2
 
-* Polygon layer element on tap support
\ No newline at end of file
+* Polygon layer element on tap support
+
diff --git a/example/pubspec.lock b/example/pubspec.lock
index 9f4da4a..493a6ec 100644
--- a/example/pubspec.lock
+++ b/example/pubspec.lock
@@ -82,7 +82,7 @@ packages:
       path: ".."
       relative: true
     source: path
-    version: "0.1.5"
+    version: "0.1.6"
   flutter_test:
     dependency: "direct dev"
     description: flutter
diff --git a/pubspec.lock b/pubspec.lock
index 0af49b9..a939db5 100644
--- a/pubspec.lock
+++ b/pubspec.lock
@@ -37,7 +37,7 @@ packages:
     source: hosted
     version: "1.1.0"
   collection:
-    dependency: transitive
+    dependency: "direct main"
     description:
       name: collection
       url: "https://pub.dartlang.org"
@@ -96,7 +96,7 @@ packages:
     source: hosted
     version: "0.17.0"
   latlong2:
-    dependency: transitive
+    dependency: "direct main"
     description:
       name: latlong2
       url: "https://pub.dartlang.org"
@@ -213,7 +213,7 @@ packages:
     source: hosted
     version: "2.0.0"
   tuple:
-    dependency: transitive
+    dependency: "direct main"
     description:
       name: tuple
       url: "https://pub.dartlang.org"
diff --git a/pubspec.yaml b/pubspec.yaml
index 0e1ce17..15eb5e9 100644
--- a/pubspec.yaml
+++ b/pubspec.yaml
@@ -1,6 +1,6 @@
 name: flutter_map_arcgis
 description: Arcgis plugin for flutter map. Features Support unique render, ontap event, ontap with atttributes, geometry types (point, polgyon)
-version: 0.1.6
+version: 2.0.0
 author: Khan Khulgun Team
 homepage: https://github.com/khankhulgun/flutter_map_arcgis
 
@@ -12,6 +12,9 @@ dependencies:
     sdk: flutter
   flutter_map: ^0.14.0
   dio: ^4.0.0
+  latlong2: ^0.8.1
+  collection: ^1.15.0
+  tuple: ^2.0.0
 
 
 dev_dependencies: