Your Gemfile lists the gem rdoc (~> 4.3) more than once. You should probably keep only one of them. Remove any duplicate entries and specify the gem only once (per group). While it's not a problem now, it could cause errors if you change the version of one of them later. Your Gemfile lists the gem redmine_extensions (>= 0) more than once. You should probably keep only one of them. Remove any duplicate entries and specify the gem only once (per group). While it's not a problem now, it could cause errors if you change the version of one of them later. Fetching https://github.com/jbox-web/gitolite-rugged.git Fetching https://github.com/jbox-web/grack.git The dependency tzinfo-data (>= 0) will be unused by any of the platforms Bundler is installing for. Bundler is installing for ruby but the dependency is only for x86-mingw32, x64-mingw32, x86-mswin32. To add those platforms to the bundle, run `bundle lock --add-platform x86-mingw32 x64-mingw32 x86-mswin32`. Fetching gem metadata from https://rubygems.org/.......... Fetching gem metadata from https://rubygems.org/. Resolving dependencies........ Bundler could not find compatible versions for gem "actionpack": In Gemfile: actionpack-xml_parser was resolved to 1.0.2, which depends on actionpack (>= 4.0.0, < 5) haml-rails was resolved to 1.0.0, which depends on actionpack (>= 4.0.1) rails (= 4.2.11.1) was resolved to 4.2.11.1, which depends on actionpack (= 4.2.11.1) redmine_plugins_helper was resolved to 0.9.2, which depends on rspec-rails was resolved to 4.1.2, which depends on actionpack (>= 4.2) redmine_plugins_helper was resolved to 0.9.2, which depends on sass-rails (~> 5.0) was resolved to 5.0.7, which depends on sprockets-rails (>= 2.0, < 4.0) was resolved to 3.2.2, which depends on actionpack (>= 4.0) Bundler could not find compatible versions for gem "activemodel": In Gemfile: redmine_nonproject_modules was resolved to 0.3.7, which depends on eac_rails_utils (~> 0.12, >= 0.12.2) was resolved to 0.15.0, which depends on activemodel-associations (~> 0.2) was resolved to 0.2.0, which depends on activemodel (< 6, >= 4.1) protected_attributes was resolved to 1.1.4, which depends on activemodel (>= 4.0.1, < 5.0) rails (= 4.2.11.1) was resolved to 4.2.11.1, which depends on activemodel (= 4.2.11.1) redmine_remotes was resolved to 0.15.1, which depends on validate_url (~> 1.0, >= 1.0.8) was resolved to 1.0.15, which depends on activemodel (>= 3.0.0) Bundler could not find compatible versions for gem "activerecord": In Gemfile: redmine_nonproject_modules was resolved to 0.3.7, which depends on eac_rails_utils (~> 0.12, >= 0.12.2) was resolved to 0.15.0, which depends on activemodel-associations (~> 0.2) was resolved to 0.2.0, which depends on activerecord (< 6, >= 4.1) redmine_events_manager was resolved to 0.4.11, which depends on delayed_job_active_record was resolved to 4.1.7, which depends on activerecord (>= 3.0, < 8.0) rails (= 4.2.11.1) was resolved to 4.2.11.1, which depends on activerecord (= 4.2.11.1) test_after_commit (~> 0.4.2) was resolved to 0.4.2, which depends on activerecord (>= 3.2) Bundler could not find compatible versions for gem "activesupport": In Gemfile: redmine_nonproject_modules was resolved to 0.3.7, which depends on eac_rails_utils (~> 0.12, >= 0.12.2) was resolved to 0.15.0, which depends on activemodel-associations (~> 0.2) was resolved to 0.2.0, which depends on activesupport (< 6, >= 4.1) redmine_events_manager was resolved to 0.4.11, which depends on delayed_job_active_record was resolved to 4.1.7, which depends on delayed_job (>= 3.0, < 5) was resolved to 4.1.10, which depends on activesupport (>= 3.0, < 8.0) notifyme was resolved to 0.4.10, which depends on eac_ruby_utils (~> 0.46) was resolved to 0.95.1, which depends on activesupport (>= 4, < 7) haml-rails was resolved to 1.0.0, which depends on activesupport (>= 4.0.1) rails (= 4.2.11.1) was resolved to 4.2.11.1, which depends on activesupport (= 4.2.11.1) rails-dom-testing was resolved to 1.0.9, which depends on activesupport (>= 4.2.0, < 5.0) redmine_plugins_helper was resolved to 0.9.2, which depends on rspec-rails was resolved to 4.1.2, which depends on activesupport (>= 4.2) redmine_plugins_helper was resolved to 0.9.2, which depends on sass-rails (~> 5.0) was resolved to 5.0.7, which depends on sprockets-rails (>= 2.0, < 4.0) was resolved to 3.2.2, which depends on activesupport (>= 4.0) Bundler could not find compatible versions for gem "i18n": In Gemfile: i18n (~> 0.7.0) rails (= 4.2.11.1) was resolved to 4.2.11.1, which depends on activesupport (= 4.2.11.1) was resolved to 4.2.11.1, which depends on i18n (~> 0.7) faker was resolved to 2.1.0, which depends on i18n (>= 0.7) Bundler could not find compatible versions for gem "mail": In Gemfile: mail (~> 2.6.4) rails (= 4.2.11.1) was resolved to 4.2.11.1, which depends on actionmailer (= 4.2.11.1) was resolved to 4.2.11.1, which depends on mail (~> 2.5, >= 2.5.4) Bundler could not find compatible versions for gem "nokogiri": In Gemfile: nokogiri (~> 1.8.1) redmine_remotes was resolved to 0.15.1, which depends on aranha-parsers (~> 0.14, >= 0.14.1) was resolved to 0.14.1, which depends on nokogiri (~> 1.12, >= 1.12.4) Bundler could not find compatible versions for gem "rack": In Gemfile: rails (= 4.2.11.1) was resolved to 4.2.11.1, which depends on actionpack (= 4.2.11.1) was resolved to 4.2.11.1, which depends on rack (~> 1.6) capybara (~> 2.13) was resolved to 2.18.0, which depends on rack (>= 1.0.0) gitlab-grack was resolved to 2.0.0.pre, which depends on rack (~> 1.6.0) rack-openid was resolved to 1.4.2, which depends on rack (>= 1.1.0) rack-parser was resolved to 0.7.0, which depends on rack redmine_plugins_helper was resolved to 0.9.2, which depends on sass-rails (~> 5.0) was resolved to 5.0.7, which depends on sprockets (>= 2.8, < 4.0) was resolved to 3.7.2, which depends on rack (> 1, < 3) Bundler could not find compatible versions for gem "rack-test": In Gemfile: rails (= 4.2.11.1) was resolved to 4.2.11.1, which depends on actionpack (= 4.2.11.1) was resolved to 4.2.11.1, which depends on rack-test (~> 0.6.2) capybara (~> 2.13) was resolved to 2.18.0, which depends on rack-test (>= 0.5.4) Bundler could not find compatible versions for gem "rails": In Gemfile: rails (= 4.2.11.1) redmine_nonproject_modules was resolved to 0.3.7, which depends on active_scaffold (~> 3.5) was resolved to 3.5.5, which depends on rails (>= 4.0.5, < 5.2.0) redmine_nonproject_modules was resolved to 0.3.7, which depends on eac_rails_utils (~> 0.12, >= 0.12.2) was resolved to 0.15.0, which depends on rails (>= 4.2.11) redmine_crm was resolved to 0.0.57, which depends on rails redmine_extensions was resolved to 0.4.4, which depends on rails (>= 4.2, < 6.2) Bundler could not find compatible versions for gem "rails-dom-testing": In Gemfile: rails-dom-testing redmine_nonproject_modules was resolved to 0.3.7, which depends on jquery-rails (~> 4.4) was resolved to 4.5.0, which depends on rails-dom-testing (>= 1, < 3) Bundler could not find compatible versions for gem "railties": In Gemfile: haml-rails was resolved to 1.0.0, which depends on railties (>= 4.0.1) redmine_nonproject_modules was resolved to 0.3.7, which depends on jquery-rails (~> 4.4) was resolved to 4.5.0, which depends on railties (>= 4.2.0) redmine_tasks_scheduler was resolved to 0.3.1, which depends on tasks_scheduler (~> 0.6) was resolved to 0.6.10, which depends on js-routes (~> 1.4, >= 1.4.14) was resolved to 1.4.14, which depends on railties (>= 4) rails (= 4.2.11.1) was resolved to 4.2.11.1, which depends on railties (= 4.2.11.1) roadie-rails (~> 1.1.1) was resolved to 1.1.1, which depends on railties (>= 3.0, < 5.1) redmine_plugins_helper was resolved to 0.9.2, which depends on sass-rails (~> 5.0) was resolved to 5.0.7, which depends on railties (>= 4.0.0, < 6) Bundler could not find compatible versions for gem "request_store": In Gemfile: request_store (= 1.0.5) redmine_nonproject_modules was resolved to 0.3.7, which depends on active_scaffold (~> 3.5) was resolved to 3.6.10, which depends on request_store (~> 1.3) Bundler could not find compatible versions for gem "roadie": In Gemfile: roadie (~> 3.2.1) roadie-rails (~> 1.1.1) was resolved to 1.1.1, which depends on roadie (~> 3.1) Bundler could not find compatible versions for gem "sprockets": In Gemfile: redmine_plugins_helper was resolved to 0.9.2, which depends on sass-rails (~> 5.0) was resolved to 5.0.7, which depends on sprockets (>= 2.8, < 4.0) redmine_plugins_helper was resolved to 0.9.2, which depends on sass-rails (~> 5.0) was resolved to 5.0.7, which depends on sprockets-rails (>= 2.0, < 4.0) was resolved to 3.2.2, which depends on sprockets (>= 3.0.0) Bundler could not find compatible versions for gem "sprockets-rails": In Gemfile: rails (= 4.2.11.1) was resolved to 4.2.11.1, which depends on sprockets-rails redmine_plugins_helper was resolved to 0.9.2, which depends on sass-rails (~> 5.0) was resolved to 5.0.7, which depends on sprockets-rails (>= 2.0, < 4.0)