diff --git a/CHANGELOG.md b/CHANGELOG.md
index 3579867..20eab24 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,8 +1,24 @@
 # Changelog
 
-## [2.0.0](https://github.com/mob-sakai/ParticleEffectForUGUI/tree/2.0.0) (2019-01-17)
+## [v2.1.0](https://github.com/mob-sakai/ParticleEffectForUGUI/tree/v2.1.0) (2019-02-07)
 
-[Full Changelog](https://github.com/mob-sakai/ParticleEffectForUGUI/compare/v1.3.3...2.0.0)
+[Full Changelog](https://github.com/mob-sakai/ParticleEffectForUGUI/compare/v2.0.0...v2.1.0)
+
+World simulation bug is fixed.  
+
+Before:  
+![](https://user-images.githubusercontent.com/12690315/52271654-a1008380-2987-11e9-8afc-51bfe634d78e.gif)
+
+After:  
+![](https://user-images.githubusercontent.com/12690315/52338840-d2905200-2a4e-11e9-8e53-14b39808ecad.gif)
+
+**Fixed bugs:**
+
+- When moving the transform in world simulation mode, particles don't behave as expected [\#37](https://github.com/mob-sakai/ParticleEffectForUGUI/issues/37)
+
+## [v2.0.0](https://github.com/mob-sakai/ParticleEffectForUGUI/tree/v2.0.0) (2019-01-17)
+
+[Full Changelog](https://github.com/mob-sakai/ParticleEffectForUGUI/compare/2.0.0...v2.0.0)
 
 **Install UIParticle with Unity Package Manager!**
 
@@ -148,4 +164,4 @@ You can mask and sort particles for uGUI without Camera, RenderTexture, Canvas.
 
 
 
-\* *This Changelog was automatically generated by [github_changelog_generator](https://github.com/skywinder/Github-Changelog-Generator)*
\ No newline at end of file
+\* *This Changelog was automatically generated by [github_changelog_generator](https://github.com/github-changelog-generator/github-changelog-generator)*
diff --git a/README.md b/README.md
index 1d123fe..d9f5880 100644
--- a/README.md
+++ b/README.md
@@ -74,12 +74,12 @@ Find the manifest.json file in the Packages folder of your project and edit it t
 ```js
 {
   "dependencies": {
-    "com.coffee.ui-particle": "https://github.com/mob-sakai/ParticleEffectForUGUI.git#2.0.0",
+    "com.coffee.ui-particle": "https://github.com/mob-sakai/ParticleEffectForUGUI.git#2.1.0",
     ...
   },
 }
 ```
-To update the package, change `#2.0.0` to the target version.
+To update the package, change `#{version}` to the target version.
 
 #### Using .unitypackage file (for Unity 2018.2+)
 
diff --git a/package.json b/package.json
index 87b8004..ff4e41d 100644
--- a/package.json
+++ b/package.json
@@ -2,7 +2,7 @@
   "name": "com.coffee.ui-particle",
 	"displayName": "UI Particle",
 	"description": "This plugin provide a component to render particle effect for uGUI.\nThe particle rendering is maskable and sortable, without Camera, RenderTexture or Canvas.",
-  "version": "2.0.0",
+  "version": "2.1.0",
 	"unity": "2018.2",
   "license": "MIT",
   "repository": {