chore: Work around issue with Travis CI
chore: Work around issue with Travis CI

https://github.com/travis-ci/travis-ci/issues/8969

playon/doorkeeper-openid_connect,doorkeeper-gem/doorkeeper-openid_connect,doorkeeper-gem/doorkeeper-openid_connect,doorkeeper-gem/doorkeeper-openid_connect,doorkeeper-gem/doorkeeper-openid_connect,playon/doorkeeper-openid_connect