diff --git a/CHANGELOG.md b/CHANGELOG.md
index be617e23..ba27b4ac 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,19 @@
+
+# [1.0.0-rc.9](https://github.com/vuejs/composition-api/compare/v1.0.0-rc.8...v1.0.0-rc.9) (2021-05-19)
+
+
+### Bug Fixes
+
+* The behavior of development and production merge should be consistent. ([#694](https://github.com/vuejs/composition-api/issues/694)) ([7ca7010](https://github.com/vuejs/composition-api/commit/7ca7010))
+* **shallowReactive:** align behavior with vue-next ([#696](https://github.com/vuejs/composition-api/issues/696)) ([3485ecb](https://github.com/vuejs/composition-api/commit/3485ecb))
+
+
+### Features
+
+* add and delete object attributes would trigger update. ([#692](https://github.com/vuejs/composition-api/issues/692)) ([8c27d80](https://github.com/vuejs/composition-api/commit/8c27d80))
+
+
+
# [1.0.0-rc.8](https://github.com/vuejs/composition-api/compare/v1.0.0-rc.7...v1.0.0-rc.8) (2021-04-29)
diff --git a/README.md b/README.md
index bc28addc..c6c1f02e 100644
--- a/README.md
+++ b/README.md
@@ -41,7 +41,7 @@ Include `@vue/composition-api` after Vue and it will install itself automaticall
```html
-
+
```
diff --git a/README.zh-CN.md b/README.zh-CN.md
index 70b57728..913d18c4 100644
--- a/README.zh-CN.md
+++ b/README.zh-CN.md
@@ -40,7 +40,7 @@ import { ref, reactive } from '@vue/composition-api'
```html
-
+
```
diff --git a/package.json b/package.json
index 4c3e48c0..db072a17 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
{
"name": "@vue/composition-api",
- "version": "1.0.0-rc.8",
+ "version": "1.0.0-rc.9",
"description": "Provide logic composition capabilities for Vue.",
"keywords": [
"vue",