cocoapods 无法更新

[myhj023]

juns-Mac-mini:kartor3 junhuang$ sudo gem install cocoapods --pre
Password:
Sorry, try again.
Password:
Fetching: cocoapods-core-1.1.0.beta.1.gem (100%)
Successfully installed cocoapods-core-1.1.0.beta.1
Fetching: cocoapods-downloader-1.1.0.gem (100%)
Successfully installed cocoapods-downloader-1.1.0
Fetching: cocoapods-try-1.1.0.gem (100%)
Successfully installed cocoapods-try-1.1.0
Fetching: molinillo-0.5.0.gem (100%)
Successfully installed molinillo-0.5.0

ERROR: While executing gem ... (Errno::EPERM)
Operation not permitted - /usr/bin/xcodeproj

[myhj023]

这样可以，谢了。

[zx119koko]

sudo gem install -n /usr/local/bin cocoapods