We should be able to update minor versions of stable libs without breaking
gitlab Gemfile

--- a/Gemfile
+++ b/Gemfile
@@ -1,6 +1,6 @@
 source 'https://rubygems.org'
 
-gem 'rails', '5.2.3'
+gem 'rails', '~> 5.2.3'
 
 gem 'bootsnap', '~> 1.4'
 
@@ -10,10 +10,10 @@
 # Responders respond_to and respond_with
 gem 'responders', '~> 3.0'
 
-gem 'sprockets', '~> 3.7.0'
+gem 'sprockets', '~> 3.7'
 
 # Default values for AR models
-gem 'default_value_for', '~> 3.3.0'
+gem 'default_value_for', '~> 3.3'
 
 # Supported DBs
 gem 'pg', '~> 1.1'
@@ -22,32 +22,32 @@
 gem 'grape-path-helpers', '~> 1.1'
 
 gem 'faraday', '~> 0.12'
-gem 'marginalia', '~> 1.8.0'
+gem 'marginalia', '~> 1.8'
 
 # Authentication libraries
 gem 'devise', '~> 4.6'
 gem 'doorkeeper', '~> 4.3'
 gem 'doorkeeper-openid_connect', '~> 1.5'
 gem 'omniauth', '~> 1.8'
-gem 'omniauth-auth0', '~> 2.0.0'
+gem 'omniauth-auth0', '~> 2.0'
 gem 'omniauth-azure-oauth2', '~> 0.0.9'
-gem 'omniauth-cas3', '~> 1.1.4'
-gem 'omniauth-facebook', '~> 4.0.0'
+gem 'omniauth-cas3', '~> 1.1', '>= 1.1.4'
+gem 'omniauth-facebook', '~> 4.0'
 gem 'omniauth-github', '~> 1.3'
-gem 'omniauth-gitlab', '~> 1.0.2'
+gem 'omniauth-gitlab', '~> 1.0', '>= 1.0.2'
 gem 'omniauth-google-oauth2', '~> 0.6.0'
 gem 'omniauth-kerberos', '~> 0.3.0', group: :kerberos
 gem 'omniauth-oauth2-generic', '~> 0.2.2'
 gem 'omniauth-saml', '~> 1.10'
-gem 'omniauth-shibboleth', '~> 1.3.0'
+gem 'omniauth-shibboleth', '~> 1.3'
 gem 'omniauth-twitter', '~> 1.4'
-gem 'omniauth_crowd', '~> 2.2.0'
+gem 'omniauth_crowd', '~> 2.2'
 gem 'omniauth-authentiq', '~> 0.3.3'
 gem 'omniauth_openid_connect', '~> 0.3.3'
 gem "omniauth-ultraauth", '~> 0.0.2'
-gem 'omniauth-salesforce', '~> 1.0.5'
-gem 'rack-oauth2', '~> 1.9.3'
-gem 'jwt', '~> 2.1.0'
+gem 'omniauth-salesforce', '~> 1.0', '>= 1.0.5'
+gem 'rack-oauth2', '~> 1.9', '>= 1.9.3'
+gem 'jwt', '~> 2.1'
 
 # Kerberos authentication. EE-only
 gem 'gssapi', group: :kerberos
@@ -58,42 +58,42 @@
 gem 'invisible_captcha', '~> 0.12.1'
 
 # Two-factor authentication
-gem 'devise-two-factor', '~> 3.0.0'
+gem 'devise-two-factor', '~> 3.0'
 gem 'rqrcode-rails3', '~> 0.1.7'
-gem 'attr_encrypted', '~> 3.1.0'
+gem 'attr_encrypted', '~> 3.1'
 gem 'u2f', '~> 0.2.1'
 
 # GitLab Pages
-gem 'validates_hostname', '~> 1.0.6'
-gem 'rubyzip', '~> 2.0.0', require: 'zip'
+gem 'validates_hostname', '~> 1.0', '>= 1.0.6'
+gem 'rubyzip', '~> 2.0', require: 'zip'
 # GitLab Pages letsencrypt support
-gem 'acme-client', '~> 2.0.2'
+gem 'acme-client', '~> 2.0', '>= 2.0.2'
 
 # Browser detection
 gem 'browser', '~> 2.5'
 
 # GPG
-gem 'gpgme', '~> 2.0.19'
+gem 'gpgme', '~> 2.0', '>= 2.0.19'
 
 # LDAP Auth
 # GitLab fork with several improvements to original library. For full list of changes
 # see https://github.com/intridea/omniauth-ldap/compare/master...gitlabhq:master
-gem 'gitlab_omniauth-ldap', '~> 2.1.1', require: 'omniauth-ldap'
+gem 'gitlab_omniauth-ldap', '~> 2.1', '>= 2.1.1', require: 'omniauth-ldap'
 gem 'net-ldap'
 
 # API
-gem 'grape', '~> 1.1.0'
+gem 'grape', '~> 1.1'
 gem 'grape-entity', '~> 0.7.1'
-gem 'rack-cors', '~> 1.0.0', require: 'rack/cors'
+gem 'rack-cors', '~> 1.0', require: 'rack/cors'
 
 # GraphQL API
-gem 'graphql', '~> 1.9.11'
+gem 'graphql', '~> 1.9', '>= 1.9.11'
 # NOTE: graphiql-rails v1.5+ doesn't work: https://gitlab.com/gitlab-org/gitlab/issues/31771
 # TODO: remove app/views/graphiql/rails/editors/show.html.erb when https://github.com/rmosolgo/graphiql-rails/pull/71 is released:
 # https://gitlab.com/gitlab-org/gitlab/issues/31747
-gem 'graphiql-rails', '~> 1.4.10'
+gem 'graphiql-rails', '~> 1.4', '>= 1.4.10'
 gem 'apollo_upload_server', '~> 2.0.0.beta3'
-gem 'graphql-docs', '~> 1.6.0', group: [:development, :test]
+gem 'graphql-docs', '~> 1.6', group: [:development, :test]
 
 # Disable strong_params so that Mash does not respond to :permitted?
 gem 'hashie-forbidden_attributes'
@@ -102,7 +102,7 @@
 gem 'kaminari', '~> 1.0'
 
 # HAML
-gem 'hamlit', '~> 2.11.0'
+gem 'hamlit', '~> 2.11'
 
 # Files attachments
 gem 'carrierwave', '~> 1.3'
@@ -112,7 +112,7 @@
 gem 'fog-aws', '~> 3.5'
 # Locked until fog-google resolves https://github.com/fog/fog-google/issues/421.
 # Also see config/initializers/fog_core_patch.rb.
-gem 'fog-core', '= 2.1.0'
+gem 'fog-core', '= 2.1'
 gem 'fog-google', '~> 1.9'
 gem 'fog-local', '~> 0.6'
 gem 'fog-openstack', '~> 1.0'
@@ -126,47 +126,47 @@
 gem 'unf', '~> 0.1.4'
 
 # Seed data
-gem 'seed-fu', '~> 2.3.7'
+gem 'seed-fu', '~> 2.3', '>= 2.3.7'
 
 # Search
 gem 'elasticsearch-model', '~> 0.1.9'
 gem 'elasticsearch-rails', '~> 0.1.9', require: 'elasticsearch/rails/instrumentation'
-gem 'elasticsearch-api',   '5.0.3'
+gem 'elasticsearch-api',   '~> 5.0', '>= 5.0.3'
 gem 'aws-sdk'
 gem 'faraday_middleware-aws-signers-v4'
 
 # Markdown and HTML processing
 gem 'html-pipeline', '~> 2.12'
-gem 'deckar01-task_list', '2.2.1'
-gem 'gitlab-markup', '~> 1.7.0'
-gem 'github-markup', '~> 1.7.0', require: 'github/markup'
+gem 'deckar01-task_list', '~> 2.3', '>= 2.2.1'
+gem 'gitlab-markup', '~> 1.7'
+gem 'github-markup', '~> 1.7', require: 'github/markup'
 gem 'commonmarker', '~> 0.20'
-gem 'RedCloth', '~> 4.3.2'
-gem 'rdoc', '~> 6.1.2'
+gem 'RedCloth', '~> 4.3', '>= 4.3.2'
+gem 'rdoc', '~> 6.1'
 gem 'org-ruby', '~> 0.9.12'
 gem 'creole', '~> 0.5.0'
 gem 'wikicloth', '0.8.1'
-gem 'asciidoctor', '~> 2.0.10'
+gem 'asciidoctor', '~> 2.0', '>= 2.0.10'
 gem 'asciidoctor-include-ext', '~> 0.3.1', require: false
 gem 'asciidoctor-plantuml', '0.0.9'
-gem 'rouge', '~> 3.11.0'
+gem 'rouge', '~> 3.11'
 gem 'truncato', '~> 0.7.11'
-gem 'bootstrap_form', '~> 4.2.0'
-gem 'nokogiri', '~> 1.10.5'
+gem 'bootstrap_form', '~> 4.2'
+gem 'nokogiri', '~> 1.0', '>= 1.10.5'
 gem 'escape_utils', '~> 1.1'
 
 # Calendar rendering
 gem 'icalendar'
 
 # Diffs
-gem 'diffy', '~> 3.1.0'
+gem 'diffy', '~> 3.1'
 gem 'diff_match_patch', '~> 0.1.0'
 
 # Application server
-gem 'rack', '~> 2.0.7'
+gem 'rack', '~> 2.0', '>= 2.0.7'
 
 group :unicorn do
-  gem 'unicorn', '~> 5.4.1'
+  gem 'unicorn', '~> 5.4', '>= 5.4.1'
   gem 'unicorn-worker-killer', '~> 0.4.4'
 end
 
@@ -183,13 +183,13 @@
 gem 'acts-as-taggable-on', '~> 6.0'
 
 # Background jobs
-gem 'sidekiq', '~> 5.2.7'
+gem 'sidekiq', '~> 5.2', '>= 5.2.7'
 gem 'sidekiq-cron', '~> 1.0'
-gem 'redis-namespace', '~> 1.6.0'
+gem 'redis-namespace', '~> 1.6'
 gem 'gitlab-sidekiq-fetcher', '0.5.2', require: 'sidekiq-reliable-fetch'
 
 # Cron Parser
-gem 'fugit', '~> 1.2.1'
+gem 'fugit', '~> 1.2', '>= 1.2.1'
 
 # HTTP requests
 gem 'httparty', '~> 0.16.4'
@@ -201,14 +201,14 @@
 gem 'ruby-progressbar'
 
 # GitLab settings
-gem 'settingslogic', '~> 2.0.9'
+gem 'settingslogic', '~> 2.0', '>= 2.0.9'
 
 # Linear-time regex library for untrusted regular expressions
-gem 're2', '~> 1.1.1'
+gem 're2', '~> 1.1', '>= 1.1.1'
 
 # Misc
 
-gem 'version_sorter', '~> 2.2.4'
+gem 'version_sorter', '~> 2.2', '>= 2.2.4'
 
 # Export Ruby Regex to Javascript
 gem 'js_regex', '~> 3.1'
@@ -221,13 +221,13 @@
 gem 'connection_pool', '~> 2.0'
 
 # Redis session store
-gem 'redis-rails', '~> 5.0.2'
+gem 'redis-rails', '~> 5.0', '>= 5.0.2'
 
 # Discord integration
 gem 'discordrb-webhooks-blackst0ne', '~> 3.3', require: false
 
 # HipChat integration
-gem 'hipchat', '~> 1.5.0'
+gem 'hipchat', '~> 1.5'
 
 # Jira integration
 gem 'jira-ruby', '~> 1.7'
@@ -237,7 +237,7 @@
 gem 'flowdock', '~> 0.7'
 
 # Slack integration
-gem 'slack-notifier', '~> 1.5.1'
+gem 'slack-notifier', '~> 1.5', '>= 1.5.1'
 
 # Hangouts Chat integration
 gem 'hangouts-chat', '~> 0.0.5'
@@ -249,11 +249,11 @@
 gem 'ruby-fogbugz', '~> 0.2.1'
 
 # Kubernetes integration
-gem 'kubeclient', '~> 4.4.0'
+gem 'kubeclient', '~> 4.4'
 
 # Sanitize user input
 gem 'sanitize', '~> 4.6'
-gem 'babosa', '~> 1.0.2'
+gem 'babosa', '~> 1.0', '>= 1.0.2'
 
 # Sanitizes SVG input
 gem 'loofah', '~> 2.2'
@@ -262,7 +262,7 @@
 gem 'licensee', '~> 8.9'
 
 # Ace editor
-gem 'ace-rails-ap', '~> 4.1.0'
+gem 'ace-rails-ap', '~> 4.1'
 
 # Detect and convert string character encoding
 gem 'charlock_holmes', '~> 0.7.5'
@@ -280,10 +280,10 @@
 gem 'webpack-rails', '~> 0.9.10'
 gem 'rack-proxy', '~> 0.6.0'
 
-gem 'sassc-rails', '~> 2.1.0'
-gem 'uglifier', '~> 2.7.2'
+gem 'sassc-rails', '~> 2.1'
+gem 'uglifier', '~> 2.7', '>= 2.7.2'
 
-gem 'addressable', '~> 2.5.2'
+gem 'addressable', '~> 2.5', '>= 2.5.2'
 gem 'font-awesome-rails', '~> 4.7'
 gem 'gemojione', '~> 3.3'
 gem 'gon', '~> 6.2'
@@ -293,12 +293,12 @@
 gem "gitlab-license", "~> 1.0"
 
 # Protect against bruteforcing
-gem 'rack-attack', '~> 6.2.0'
+gem 'rack-attack', '~> 6.2'
 
 # Sentry integration
 gem 'sentry-raven', '~> 2.9'
 
-gem 'premailer-rails', '~> 1.10.3'
+gem 'premailer-rails', '~> 1.10', '>= 1.10.3'
 
 # LabKit: Tracing and Correlation
 gem 'gitlab-labkit', '~> 0.5'
@@ -306,11 +306,11 @@
 # I18n
 gem 'ruby_parser', '~> 3.8', require: false
 gem 'rails-i18n', '~> 5.1'
-gem 'gettext_i18n_rails', '~> 1.8.0'
+gem 'gettext_i18n_rails', '~> 1.8'
 gem 'gettext_i18n_rails_js', '~> 1.3'
-gem 'gettext', '~> 3.2.2', require: false, group: :development
+gem 'gettext', '~> 3.2', '>= 3.2.2', require: false, group: :development
 
-gem 'batch-loader', '~> 1.4.0'
+gem 'batch-loader', '~> 1.4'
 
 # Perf bar
 gem 'peek', '~> 1.1'
@@ -348,23 +348,23 @@
 
 group :development, :test do
   gem 'bullet', '~> 6.0.2', require: !!ENV['ENABLE_BULLET']
-  gem 'pry-byebug', '~> 3.5.1', platform: :mri
+  gem 'pry-byebug', '~> 3.5', '>= 3.5.1', platform: :mri
   gem 'pry-rails', '~> 0.3.4'
 
   gem 'awesome_print', require: false
 
-  gem 'database_cleaner', '~> 1.7.0'
-  gem 'factory_bot_rails', '~> 5.1.0'
-  gem 'rspec-rails', '~> 4.0.0.beta3'
+  gem 'database_cleaner', '~> 1.7'
+  gem 'factory_bot_rails', '~> 5.1'
+  gem 'rspec-rails', '>= 4.0.0.beta3', '< 5.0'
 
   # Prevent occasions where minitest is not bundled in packaged versions of ruby (see #3826)
-  gem 'minitest', '~> 5.11.0'
+  gem 'minitest', '~> 5.11'
 
   # Generate Fake data
   gem 'ffaker', '~> 2.10'
 
-  gem 'spring', '~> 2.0.0'
-  gem 'spring-commands-rspec', '~> 1.0.4'
+  gem 'spring', '~> 2.0'
+  gem 'spring-commands-rspec', '~> 1.0', '>= 1.0.4'
 
   gem 'gitlab-styles', '~> 2.7', require: false
   # Pin these dependencies, otherwise a new rule could break the CI pipelines
@@ -377,13 +377,13 @@
   gem 'simplecov', '~> 0.16.1', require: false
   gem 'bundler-audit', '~> 0.5.0', require: false
 
-  gem 'benchmark-ips', '~> 2.3.0', require: false
+  gem 'benchmark-ips', '~> 2.3', require: false
 
   gem 'knapsack', '~> 1.17'
 
   gem 'stackprof', '~> 0.2.13', require: false
 
-  gem 'simple_po_parser', '~> 1.1.2', require: false
+  gem 'simple_po_parser', '~> 1.1', '>= 1.1.2', require: false
 
   gem 'timecop', '~> 0.8.0'
 end
@@ -394,20 +394,20 @@
 end
 
 group :test do
-  gem 'fuubar', '~> 2.2.0'
+  gem 'fuubar', '~> 2.2'
   gem 'rspec-retry', '~> 0.6.1'
   gem 'rspec_profiling', '~> 0.0.5'
   gem 'rspec-set', '~> 0.1.3'
   gem 'rspec-parameterized', require: false
 
-  gem 'capybara', '~> 3.22.0'
-  gem 'capybara-screenshot', '~> 1.0.22'
+  gem 'capybara', '~> 3.22'
+  gem 'capybara-screenshot', '~> 1.0', '>= 1.0.22'
   gem 'selenium-webdriver', '~> 3.142'
 
-  gem 'shoulda-matchers', '~> 4.0.1', require: false
-  gem 'email_spec', '~> 2.2.0'
-  gem 'json-schema', '~> 2.8.0'
-  gem 'webmock', '~> 3.5.1'
+  gem 'shoulda-matchers', '~> 4.0', '>= 4.0.1', require: false
+  gem 'email_spec', '~> 2.2'
+  gem 'json-schema', '~> 2.8'
+  gem 'webmock', '~> 3.5', '>= 3.5.1'
   gem 'rails-controller-testing'
   gem 'concurrent-ruby', '~> 1.1'
   gem 'test-prof', '~> 0.10.0'
@@ -422,7 +422,7 @@
 gem 'email_reply_trimmer', '~> 0.1'
 gem 'html2text'
 
-gem 'ruby-prof', '~> 1.0.0'
+gem 'ruby-prof', '~> 1.0'
 gem 'rbtrace', '~> 0.4', require: false
 gem 'memory_profiler', '~> 0.9', require: false
 gem 'benchmark-memory', '~> 0.1', require: false
@@ -432,11 +432,11 @@
 gem 'oauth2', '~> 1.4'
 
 # Health check
-gem 'health_check', '~> 2.6.0'
+gem 'health_check', '~> 2.6'
 
 # System information
-gem 'vmstat', '~> 2.3.0'
-gem 'sys-filesystem', '~> 1.1.6'
+gem 'vmstat', '~> 2.3'
+gem 'sys-filesystem', '~> 1.1', '>= 1.1.6'
 
 # NTP client
 gem 'net-ntp'
@@ -452,13 +452,13 @@
 end
 
 # Gitaly GRPC protocol definitions
-gem 'gitaly', '~> 1.73.0'
+gem 'gitaly', '~> 1.73'
 
-gem 'grpc', '~> 1.24.0'
+gem 'grpc', '~> 1.24'
 
-gem 'google-protobuf', '~> 3.8.0'
+gem 'google-protobuf', '~> 3.8'
 
-gem 'toml-rb', '~> 1.0.0', require: false
+gem 'toml-rb', '~> 1.0', require: false
 
 # Feature toggles
 gem 'flipper', '~> 0.17.1'
@@ -476,4 +476,4 @@
 # Countries list
 gem 'countries', '~> 3.0'
 
-gem 'retriable', '~> 3.1.2'
+gem 'retriable', '~> 3.1', '>= 3.1.2'