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Editorial Team
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Asked: 2026-06-08T05:36:46+00:00

I have the following line in my gemfile: gem ‘client_side_validations’, :git => git@github.com:Dakuan/client_side_validations.git, :branch

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I have the following line in my gemfile:

gem 'client_side_validations', :git => "git@github.com:Dakuan/client_side_validations.git", :branch => "master", ref: '2245b4174ffd4b400d999cb5a2b6dccc0289eb67'

The repo it’s pointing at is public and I can run bundle install / update locally just fine. When I try to push to Heroku I get the following error:

   Fetching git@github.com:Dakuan/client_side_validations.git
   Host key verification failed.
   fatal: The remote end hung up unexpectedly
   Git error: command `git clone 'git@github.com:Dakuan/client_side_validations.git' "/tmp/build_1xa9f06n4k1cu/vendor/bundle/ruby/1.9.1/cache/bundler/git/client_side_validations-56a04875baabb67b5f8c192c6c6743df476fd90f" --bare --no-hardlinks` in directory /tmp/build_1xa9f06n4k1cu has failed.

!
! Failed to install gems via Bundler.
!
! Heroku push rejected, failed to compile Ruby/rails app

Anyone got any ideas about what’s going on here?

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1 Answer

  1. Editorial Team

    Use this GitHub URL instead: git://github.com/Dakuan/client_side_validations.git

    The git@github.com:… URL is the writable SSH version, which requires authentication with an SSH key connected to a GitHub account that has write access to the repository.

    The git://github.com/… URL is the public, read-only version.

    Since the gem you’re using is in a public GitHub repository, you can also use this shorthand in your Gemfile:

    gem 'client_side_validations', :github => 'Dakuan/client_side_validations'

    See the Bundler Git documentation for more information.

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