diff --git a/CHANGELOG.md b/CHANGELOG.md
index afc5d1d84..bdd4042b6 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,4 +1,16 @@
 
+## v9.0.0-rc.6 (2021-02-10)
+
+#### :bug: Bug Fixes
+* `vue-i18n`
+  * [#342](https://github.com/intlify/vue-i18n-next/pull/342) fix: feature flags ([@kazupon](https://github.com/kazupon))
+  * [#334](https://github.com/intlify/vue-i18n-next/pull/334) fix for function `mergeLocaleMessage`, and modify some tests ([@PeterAlfredLee](https://github.com/PeterAlfredLee))
+
+#### Committers: 2
+- Lee ([@PeterAlfredLee](https://github.com/PeterAlfredLee))
+- kazuya kawaguchi ([@kazupon](https://github.com/kazupon))
+
+
 ## v9.0.0-rc.5 (2021-02-02)
 
 #### :bug: Bug Fixes
diff --git a/package.json b/package.json
index b8c3ca8e3..4707c24b8 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "vue-i18n-next",
-  "version": "9.0.0-rc.5",
+  "version": "9.0.0-rc.6",
   "license": "MIT",
   "author": {
     "name": "kazuya kawaguchi",
diff --git a/packages/core-base/package.json b/packages/core-base/package.json
index c037528e7..c558f3eae 100644
--- a/packages/core-base/package.json
+++ b/packages/core-base/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@intlify/core-base",
-  "version": "9.0.0-rc.5",
+  "version": "9.0.0-rc.6",
   "description": "@intlify/core-base",
   "keywords": [
     "core",
@@ -33,10 +33,10 @@
   "jsdelivr": "dist/core-base.global.js",
   "types": "dist/core-base.d.ts",
   "dependencies": {
-    "@intlify/message-compiler": "9.0.0-rc.5",
-    "@intlify/message-resolver": "9.0.0-rc.5",
-    "@intlify/runtime": "9.0.0-rc.5",
-    "@intlify/shared": "9.0.0-rc.5"
+    "@intlify/message-compiler": "9.0.0-rc.6",
+    "@intlify/message-resolver": "9.0.0-rc.6",
+    "@intlify/runtime": "9.0.0-rc.6",
+    "@intlify/shared": "9.0.0-rc.6"
   },
   "engines": {
     "node": ">= 10"
diff --git a/packages/core/package.json b/packages/core/package.json
index 559bb203e..9aa2d4f0f 100644
--- a/packages/core/package.json
+++ b/packages/core/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@intlify/core",
-  "version": "9.0.0-rc.5",
+  "version": "9.0.0-rc.6",
   "description": "@intlify/core",
   "keywords": [
     "core",
@@ -33,7 +33,7 @@
   "jsdelivr": "dist/core.global.js",
   "types": "dist/core.d.ts",
   "dependencies": {
-    "@intlify/core-base": "9.0.0-rc.5"
+    "@intlify/core-base": "9.0.0-rc.6"
   },
   "engines": {
     "node": ">= 10"
diff --git a/packages/message-compiler/package.json b/packages/message-compiler/package.json
index 8f8f1fa7e..e53eb3961 100644
--- a/packages/message-compiler/package.json
+++ b/packages/message-compiler/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@intlify/message-compiler",
-  "version": "9.0.0-rc.5",
+  "version": "9.0.0-rc.6",
   "description": "@intlify/message-compiler",
   "keywords": [
     "compiler",
@@ -33,8 +33,8 @@
   "jsdelivr": "dist/message-compiler.global.js",
   "types": "dist/message-compiler.d.ts",
   "dependencies": {
-    "@intlify/message-resolver": "9.0.0-rc.5",
-    "@intlify/shared": "9.0.0-rc.5",
+    "@intlify/message-resolver": "9.0.0-rc.6",
+    "@intlify/shared": "9.0.0-rc.6",
     "source-map": "0.6.1"
   },
   "engines": {
diff --git a/packages/message-resolver/package.json b/packages/message-resolver/package.json
index 33f13dc31..67399278e 100644
--- a/packages/message-resolver/package.json
+++ b/packages/message-resolver/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@intlify/message-resolver",
-  "version": "9.0.0-rc.5",
+  "version": "9.0.0-rc.6",
   "description": "@intlify/message-resolver",
   "keywords": [
     "i18n",
diff --git a/packages/runtime/package.json b/packages/runtime/package.json
index 3b350ecc5..028c872b4 100644
--- a/packages/runtime/package.json
+++ b/packages/runtime/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@intlify/runtime",
-  "version": "9.0.0-rc.5",
+  "version": "9.0.0-rc.6",
   "description": "@intlify/runtime",
   "keywords": [
     "i18n",
@@ -30,9 +30,9 @@
   "module": "dist/runtime.esm-bundler.js",
   "types": "dist/runtime.d.ts",
   "dependencies": {
-    "@intlify/message-compiler": "9.0.0-rc.5",
-    "@intlify/message-resolver": "9.0.0-rc.5",
-    "@intlify/shared": "9.0.0-rc.5"
+    "@intlify/message-compiler": "9.0.0-rc.6",
+    "@intlify/message-resolver": "9.0.0-rc.6",
+    "@intlify/shared": "9.0.0-rc.6"
   },
   "engines": {
     "node": ">= 10"
diff --git a/packages/shared/package.json b/packages/shared/package.json
index 60789f988..a2c052a4d 100644
--- a/packages/shared/package.json
+++ b/packages/shared/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@intlify/shared",
-  "version": "9.0.0-rc.5",
+  "version": "9.0.0-rc.6",
   "description": "@intlify/shared",
   "keywords": [
     "i18n",
diff --git a/packages/vue-i18n/package.json b/packages/vue-i18n/package.json
index 9b2be99bb..3f448aaf1 100644
--- a/packages/vue-i18n/package.json
+++ b/packages/vue-i18n/package.json
@@ -1,6 +1,6 @@
 {
   "name": "vue-i18n",
-  "version": "9.0.0-rc.5",
+  "version": "9.0.0-rc.6",
   "description": "Internationalization plugin for Vue.js",
   "keywords": [
     "i18n",
@@ -34,8 +34,8 @@
   "jsdelivr": "dist/vue-i18n.global.js",
   "types": "dist/vue-i18n.d.ts",
   "dependencies": {
-    "@intlify/core-base": "9.0.0-rc.5",
-    "@intlify/shared": "9.0.0-rc.5",
+    "@intlify/core-base": "9.0.0-rc.6",
+    "@intlify/shared": "9.0.0-rc.6",
     "@vue/devtools-api": "^6.0.0-beta.5"
   },
   "peerDependencies": {