diff --git a/CHANGELOG.md b/CHANGELOG.md
index a6da507..966c46c 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,12 @@
+# [2.8.0](https://github.com/mengxiong10/vue2-datepicker/compare/v2.7.0...v2.8.0) (2019-01-13)
+
+
+### Features
+
+* add `valueType` to format binding value ([dd6f2ea](https://github.com/mengxiong10/vue2-datepicker/commit/dd6f2ea))
+
+
+
 # [2.7.0](https://github.com/mengxiong10/vue2-datepicker/compare/v2.6.3...v2.7.0) (2019-01-08)
 
 
diff --git a/package-lock.json b/package-lock.json
index d0648a7..9146547 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,6 +1,6 @@
 {
   "name": "vue2-datepicker",
-  "version": "2.7.0",
+  "version": "2.8.0",
   "lockfileVersion": 1,
   "requires": true,
   "dependencies": {
diff --git a/package.json b/package.json
index 86d7673..c5a7886 100644
--- a/package.json
+++ b/package.json
@@ -6,7 +6,7 @@
     "lib",
     "src"
   ],
-  "version": "2.7.0",
+  "version": "2.8.0",
   "scripts": {
     "dev": "cross-env NODE_ENV=development webpack-dev-server --hot --open --config build/webpack.dev.config.js",
     "demo": "cross-env NODE_ENV=production webpack --progress --hide-modules --config build/webpack.demo.config.js",