用travis CI进行自动发布release时，会出错

[liujunlingx]

• What went wrong:
  A problem occurred configuring project ':app'.

Could not resolve all dependencies for configuration ':app:_debugApkCopy'.
Could not resolve com.github.nuptboyzhb.lib.uikit:superswiperefreshlayout:1.0.0.
Required by:
project :app
> Could not resolve com.github.nuptboyzhb.lib.uikit:superswiperefreshlayout:1.0.0.
> Could not get resource 'http://dl.bintray.com/nuptboyzhb/maven/com/github/nuptboyzhb/lib/uikit/superswiperefreshlayout/1.0.0/superswiperefreshlayout-1.0.0.pom'.
> Could not GET 'http://dl.bintray.com/nuptboyzhb/maven/com/github/nuptboyzhb/lib/uikit/superswiperefreshlayout/1.0.0/superswiperefreshlayout-1.0.0.pom'.
> Connect to 127.0.0.1:1080 [/127.0.0.1] failed: Connection refused (Connection refused)

以上是travis build的log信息，travis build时是用的它自己的proxy，好像墙了这个地址，要怎么解决？