diff --git a/Packages/SoftMaskForUGUI/CHANGELOG.md b/Packages/SoftMaskForUGUI/CHANGELOG.md
index f48d285..06bbea3 100644
--- a/Packages/SoftMaskForUGUI/CHANGELOG.md
+++ b/Packages/SoftMaskForUGUI/CHANGELOG.md
@@ -1,3 +1,17 @@
+# [1.0.0-preview.4](https://github.com/mob-sakai/SoftMaskForUGUI/compare/v1.0.0-preview.3...v1.0.0-preview.4) (2020-06-07)
+
+
+### Bug Fixes
+
+* fix the tooltip text ([f38f034](https://github.com/mob-sakai/SoftMaskForUGUI/commit/f38f0341480cfd8eda6bea3e488c7ae052b89924))
+
+
+### Features
+
+* add a new option to ignore stencil if it is not needed as a mask ([9edcb2d](https://github.com/mob-sakai/SoftMaskForUGUI/commit/9edcb2d22be25c285b0a7f853314884c3e9df499))
+* add a new public property 'useStencil' ([09dbaad](https://github.com/mob-sakai/SoftMaskForUGUI/commit/09dbaad203fa9eaaa16abf683add04267f82439d))
+* improve performance ([018ec78](https://github.com/mob-sakai/SoftMaskForUGUI/commit/018ec78c759745907c2e06d3ab09167939bdb05a))
+
 # [1.0.0-preview.3](https://github.com/mob-sakai/SoftMaskForUGUI/compare/v1.0.0-preview.2...v1.0.0-preview.3) (2020-06-04)
 
 
diff --git a/Packages/SoftMaskForUGUI/package.json b/Packages/SoftMaskForUGUI/package.json
index 4e4cbca..023096a 100644
--- a/Packages/SoftMaskForUGUI/package.json
+++ b/Packages/SoftMaskForUGUI/package.json
@@ -2,7 +2,7 @@
   "name": "com.coffee.softmask-for-ugui",
   "displayName": "UI Soft Mask",
   "description": "UI Soft Mask is a smooth masking component for Unity UI (uGUI) elements.\nBy using SoftMask instead of the default Mask component, you can beautifully represent the rounded edges of UI elements.",
-  "version": "1.0.0-preview.3",
+  "version": "1.0.0-preview.4",
   "unity": "2017.1",
   "license": "MIT",
   "repository": {