Ionic update not reflected

I want to update my Ionic version to 1.3.3 from 1.1.0

I used the following cmd in the project folder

bower install driftyco/ionic-bower#v1.3.1 --force
but it does not reflected in the "ionic info" command result

Cordova CLI: 6.1.1
Gulp version:  CLI version 3.9.1
Gulp local:   Local version 3.9.0
 Ionic Version: 1.1.0
Ionic CLI Version: 1.7.14
Ionic App Lib Version: 0.7.0
OS: Windows 7 SP1
Node Version: v4.4.4

Please help me.