使用新版本更新bower.json

我的bower.json中有几个依赖项，我想将包更新为最新版本，因此我运行

bower update

，它不会用新版本更改我的bower.json。我还尝试了

bowerupdatesignar--save

，但它仍然没有改变bower.json

为什么呢？我是否必须手动更改bower.json？如何知道所使用的版本

"dependencies": {
"angular": "~1.4.2",
"angular-bootstrap": "^1.2.5",
"bootstrap": "^3.3.6",
"signalr": "^2.2.0",
"toastr": "^2.1.2",
"angular-i18n": "~1.5.0",
"angular-route": "^1.5.2",
"angular-animate": "^1.5.2",
"angular-cookies": "^1.5.2",
"angular-hotkeys": "cfp-angular-hotkeys#^1.7.0",
"bootswatch": "^3.3.6",
"dirPagination": "^1.0.0"
}

---

您可以更新

bower.json

运行

bower安装一些软件包——再次保存
，然后选择要从终端升级到的版本，如下所示：

$ bower install signalr --save      
bower signalr#*                 cached https://github.com/SignalR/bower-signalr.git#2.2.1
bower signalr#*               validate 2.2.1 against https://github.com/SignalR/bower-signalr.git#*

Unable to find a suitable version for signalr, please choose one by typing one of the numbers below:
    1) signalr#2.2.0 which resolved to 2.2.0 and is required by bower-example
    2) signalr#^2.2.1 which resolved to 2.2.1

Prefix the choice with ! to persist it to bower.json

? Answer 2
bower signalr#^2.2.1           install signalr#2.2.1

signalr#2.2.1 bower_components/signalr
└── jquery#3.1.1