Protractor - webdriverManagerUpdate flag is true and not able to see latest chromedriver being pulled

[autog]

Protractor - webdriverManagerUpdate flag is true and not able to see latest chromedriver being pulled. This is pulling chromedriver_2.31.

I am using the above flag in grunt options for protractor. I believe this is equivalent of protractor - webdriver-manager update. But this is not pulling the latest chromedriver - chromedriver_2.34
Grunt:
protractor: {
options: {
noColor: false,
keepAlive: true,
webdriverManagerUpdate: true,
debug: false,
args: {}
},