Gemfile.lock

GEM
  remote: https://rubygems.org/
  specs:
    activesupport (5.2.3)
      concurrent-ruby (~> 1.0, >= 1.0.2)
      i18n (>= 0.7, < 2)
      minitest (~> 5.1)
      tzinfo (~> 1.1)
    backports (3.15.0)
    concurrent-ruby (1.1.5)
    i18n (1.6.0)
      concurrent-ruby (~> 1.0)
    icalendar (2.5.3)
      ice_cube (~> 0.16)
    ice_cube (0.16.3)
    json (2.3.0)
    minitest (5.11.3)
    multi_json (1.13.1)
    mustermann (1.0.3)
    rack (2.2.3)
    rack-protection (2.0.5)
      rack
    sinatra (2.0.5)
      mustermann (~> 1.0)
      rack (~> 2.0)
      rack-protection (= 2.0.5)
      tilt (~> 2.0)
    sinatra-contrib (2.0.5)
      backports (>= 2.8.2)
      multi_json
      mustermann (~> 1.0)
      rack-protection (= 2.0.5)
      sinatra (= 2.0.5)
      tilt (>= 1.3, < 3)
    thread_safe (0.3.6)
    tilt (2.0.9)
    tzinfo (1.2.5)
      thread_safe (~> 0.1)

PLATFORMS
  ruby

DEPENDENCIES
  activesupport
  icalendar
  json
  sinatra
  sinatra-contrib

BUNDLED WITH
   2.0.2