diff --git a/Gemfile b/Gemfile
index 31e61d522..a52e81c93 100644
--- a/Gemfile
+++ b/Gemfile
@@ -11,9 +11,9 @@ gem 'term-ansicolor'
 group :test do
   gem 'ci_reporter_rspec'
   gem 'rspec'
-  gem 'rubocop', '~> 1.12.0'
+  gem 'rubocop'
   gem 'simplecov'
   gem 'simplecov-rcov'
 end
 
-gem 'activesupport', '~> 5.2.0'
+gem 'activesupport'
diff --git a/Gemfile.lock b/Gemfile.lock
deleted file mode 100644
index 07e02fb21..000000000
--- a/Gemfile.lock
+++ /dev/null
@@ -1,107 +0,0 @@
-GEM
-  remote: https://rubygems.org/
-  specs:
-    activesupport (5.2.8)
-      concurrent-ruby (~> 1.0, >= 1.0.2)
-      i18n (>= 0.7, < 2)
-      minitest (~> 5.1)
-      tzinfo (~> 1.1)
-    ast (2.4.2)
-    builder (3.2.4)
-    ci_reporter (2.0.0)
-      builder (>= 2.1.2)
-    ci_reporter_rspec (1.0.0)
-      ci_reporter (~> 2.0)
-      rspec (>= 2.14, < 4)
-    coderay (1.1.3)
-    colorize (0.8.1)
-    concurrent-ruby (1.1.10)
-    diff-lcs (1.5.0)
-    docile (1.4.0)
-    git (1.7.0)
-      rchardet (~> 1.8)
-    gnuplot (2.6.2)
-    i18n (1.10.0)
-      concurrent-ruby (~> 1.0)
-    method_source (1.0.0)
-    minitest (5.15.0)
-    parallel (1.22.1)
-    parser (3.1.2.0)
-      ast (~> 2.4.1)
-    pry (0.14.1)
-      coderay (~> 1.1)
-      method_source (~> 1.0)
-    pry-doc (1.3.0)
-      pry (~> 0.11)
-      yard (~> 0.9.11)
-    rainbow (3.1.1)
-    rake (13.0.6)
-    rchardet (1.8.0)
-    regexp_parser (2.5.0)
-    rexml (3.2.5)
-    rspec (3.11.0)
-      rspec-core (~> 3.11.0)
-      rspec-expectations (~> 3.11.0)
-      rspec-mocks (~> 3.11.0)
-    rspec-core (3.11.0)
-      rspec-support (~> 3.11.0)
-    rspec-expectations (3.11.0)
-      diff-lcs (>= 1.2.0, < 2.0)
-      rspec-support (~> 3.11.0)
-    rspec-mocks (3.11.1)
-      diff-lcs (>= 1.2.0, < 2.0)
-      rspec-support (~> 3.11.0)
-    rspec-support (3.11.0)
-    rubocop (1.12.1)
-      parallel (~> 1.10)
-      parser (>= 3.0.0.0)
-      rainbow (>= 2.2.2, < 4.0)
-      regexp_parser (>= 1.8, < 3.0)
-      rexml
-      rubocop-ast (>= 1.2.0, < 2.0)
-      ruby-progressbar (~> 1.7)
-      unicode-display_width (>= 1.4.0, < 3.0)
-    rubocop-ast (1.17.0)
-      parser (>= 3.1.1.0)
-    ruby-progressbar (1.11.0)
-    simplecov (0.21.2)
-      docile (~> 1.1)
-      simplecov-html (~> 0.11)
-      simplecov_json_formatter (~> 0.1)
-    simplecov-html (0.12.3)
-    simplecov-rcov (0.3.1)
-      simplecov (>= 0.4.1)
-    simplecov_json_formatter (0.1.4)
-    sync (0.5.0)
-    term-ansicolor (1.7.1)
-      tins (~> 1.0)
-    thread_safe (0.3.6)
-    tins (1.31.1)
-      sync
-    tzinfo (1.2.9)
-      thread_safe (~> 0.1)
-    unicode-display_width (2.1.0)
-    webrick (1.7.0)
-    yard (0.9.28)
-      webrick (~> 1.7.0)
-
-PLATFORMS
-  aarch64-linux
-  riscv64-linux
-  x86_64-linux
-
-DEPENDENCIES
-  activesupport (~> 5.2.0)
-  ci_reporter_rspec
-  colorize
-  git (~> 1.7.0)
-  gnuplot
-  pry
-  pry-doc
-  rake
-  rspec
-  rubocop (~> 1.12.0)
-  simplecov
-  simplecov-rcov
-  term-ansicolor
-