I have Polymer 1.x project, when run bower install or bower update. blittle/sinonjs dependencie has a problem, repository not found. Apparently the project has moved to other user/repository, sinonjs/sinonjs. bower.json of polymer will be updated ?

Duplicate of https://github.com/Polymer/tools/issues/3488
As a workaround, add the following to the devDependencies in bower.json:
"sinonjs": "Polymer/sinon.js#~1.17.1"
THANK YOU!!!!!!!!!!!!!!!
FYI I updated bower.json to point to Polymer/sinon.js and tagged/"released" WCT v 6.5.1 so that bower install web-component-tester should work again.
Closing this as a duplicate.
Most helpful comment
Duplicate of https://github.com/Polymer/tools/issues/3488
As a workaround, add the following to the
devDependenciesinbower.json: