Cannot update fastlane plugins with Bundler::PermissionError There was an error while trying to write to

[wiencheck]

After running bundle exec fastlane update_plugins I get the error:
Retrying fetcher due to error (2/4): Bundler::PermissionError There was an error while trying to write to /Users/continuousintegration/.bundle/cache/compact_index/rubygems.org.443.29b0360b937aa4d161703e6160654e47/info-etags/ffi-4c77a7e0d203b25d1a7b2a27199fdb13.54884.tmp. It is likely that you need to grant write permissions for that path.

I have previously faced permission errors with Bundler when running bundle install but managed to fix them by setting environment variable GEM_HOME however I cannot find a solution to the issue of updating plugins. What's curious is that bundle exec install_plugins completes successfully.