diff --git a/CHANGELOG.md b/CHANGELOG.md
index 5d628ae..872748e 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,33 @@
 # Changelog
 
+## [v1.2.0](https://github.com/mob-sakai/ParticleEffectForUGUI/tree/v1.2.0) (2018-12-13)
+
+[Full Changelog](https://github.com/mob-sakai/ParticleEffectForUGUI/compare/v1.1.0...v1.2.0)
+
+New scaling system solves the particle effect scaling problem in most cases.
+* All ParticleSystem.ScalingModes are supported
+* All Canvas.RenderModes are supported
+* They look almost the same in all modes
+
+New scaling system scales particle effect well even if you change the following parameters:
+* Camera.FieldOfView
+* CanvasScaler.MatchWidthOrHeight
+* Canvas.PlaneDistance
+
+![](https://user-images.githubusercontent.com/12690315/49866926-6c22f500-fe4c-11e8-8393-d5a546e9e2d3.gif)
+
+**NOTE: If upgrading from v1.1.0, readjust the UIParticle.Scale property.**
+
+**Implemented enhancements:**
+
+- New scaling system [\#18](https://github.com/mob-sakai/ParticleEffectForUGUI/issues/18)
+
+**Fixed bugs:**
+
+- Rect mask 2D doesn't work [\#17](https://github.com/mob-sakai/ParticleEffectForUGUI/issues/17)
+- Using prefab view will cause a lot of errors [\#16](https://github.com/mob-sakai/ParticleEffectForUGUI/issues/16)
+- Canvas.scaleFactor not take into account [\#15](https://github.com/mob-sakai/ParticleEffectForUGUI/issues/15)
+
 ## [v1.1.0](https://github.com/mob-sakai/ParticleEffectForUGUI/tree/v1.1.0) (2018-11-28)
 
 [Full Changelog](https://github.com/mob-sakai/ParticleEffectForUGUI/compare/v1.0.0...v1.1.0)
diff --git a/package.json b/package.json
index bb4b571..07e3bd1 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "ParticleEffectForUGUI",
-  "version": "1.1.0",
+  "version": "1.2.0",
   "repository": {
     "type": "git",
     "url": "git+https://github.com/mob-sakai/ParticleEffectForUGUI.git"