无法将Heroku应用程序升级到ruby 2.1.3

我已经在我的暂存应用程序上成功完成了它,但是当我尝试推送生产应用程序(git push prod master)时,我得到了这个日志：

-----> Fetching custom git buildpack... done
-----> Ruby app detected
-----> Compiling Ruby/Rails
 !
 !     Command: 'set -o pipefail; curl --fail --retry 3 --retry-delay 1 --connect-timeout 3 --max-time 30 https://s3-external-1.amazonaws.com/heroku-buildpack-ruby/ruby-2.1.3.tgz -s -o - | tar zxf -' failed unexpectedly:
 !
 !     gzip: stdin: unexpected end of file
 !     tar: Child returned status 1
 !     tar: Exiting with failure status due to previous errors
 !

 !     Push rejected,failed to compile Ruby app

我已经尝试在过去一小时内多次重复该命令,但我从未成功部署过生产环境.

有任何想法吗？