Beta (lettered) gem versions

[itay-grudev]

I am getting the following deployment error which I believe is cause by the fact that my projects is dependent upon sprockets (>= 4.0.0.alpha4) (which doesn't seem to be installed on the server).

00:17 rvm1:install:gems
      01 /home/deploy/app/rvm1scripts/rvm-auto.sh . gem install --file Gemfile
      01 ERROR:  While executing gem ... (Gem::DependencyError)
      01     Unresolved dependency found during sorting - sprockets (>= 3.0.0) (requested by sprockets-rails-3.2.0)
      01
(Backtrace restricted to imported tasks)
cap aborted!
SSHKit::Runner::ExecuteError: Exception while executing as deploy@example.com: gem exit status: 1
gem stdout: Nothing written
gem stderr: ERROR:  While executing gem ... (Gem::DependencyError)
    Unresolved dependency found during sorting - sprockets (>= 3.0.0) (requested by sprockets-rails-3.2.0)

SSHKit::Command::Failed: gem exit status: 1
gem stdout: Nothing written
gem stderr: ERROR:  While executing gem ... (Gem::DependencyError)
    Unresolved dependency found during sorting - sprockets (>= 3.0.0) (requested by sprockets-rails-3.2.0)

Tasks: TOP => deploy => rvm1:install:gems
(See full trace by running task with --trace)

Here is a shortened version of my Gemfile.lock file:

GEM
  remote: https://rubygems.org/
  specs:
    handlebars_assets (0.23.2)
      execjs (~> 2.0)
      sprockets (>= 2.0.0)
      tilt (>= 1.2)
    rails (5.0.4)
      actioncable (= 5.0.4)
      actionmailer (= 5.0.4)
      actionpack (= 5.0.4)
      actionview (= 5.0.4)
      activejob (= 5.0.4)
      activemodel (= 5.0.4)
      activerecord (= 5.0.4)
      activesupport (= 5.0.4)
      bundler (>= 1.3.0, < 2.0)
      railties (= 5.0.4)
      sprockets-rails (>= 2.0.0)
    sass-rails (5.0.6)
      railties (>= 4.0.0, < 6)
      sass (~> 3.1)
      sprockets (>= 2.8, < 4.0)
      sprockets-rails (>= 2.0, < 4.0)
      tilt (>= 1.1, < 3)
    sprockets (4.0.0.beta4)
      concurrent-ruby (~> 1.0)
      rack (> 1, < 3)
    sprockets-rails (3.2.0)
      actionpack (>= 4.0)
      activesupport (>= 4.0)
      sprockets (>= 3.0.0)

PLATFORMS
  ruby

DEPENDENCIES
  capistrano (~> 3.7.2)
  rails (~> 5.0.1)
  rvm1-capistrano3
  sprockets (>= 4.0.0.alpha4)

RUBY VERSION
   ruby 2.3.4p301

BUNDLED WITH
   1.15.1

Tell me if you need anything else. I'll buy you a coffee/or a beer if you help me with this one.