diff --git a/Gemfile b/Gemfile
index d6ecef8..91e6052 100644
--- a/Gemfile
+++ b/Gemfile
@@ -20,5 +20,4 @@ group :test do
   gem 'rspec-mocks'
 
   gem 'danger'
-  gem 'rspec_junit_formatter'
 end
diff --git a/Gemfile.lock b/Gemfile.lock
index 1262fb3..57c35d4 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -3,7 +3,6 @@ GEM
   specs:
     addressable (2.4.0)
     ast (2.3.0)
-    builder (3.2.2)
     capybara (2.4.4)
       mime-types (>= 1.16)
       nokogiri (>= 1.3.3)
@@ -101,9 +100,6 @@ GEM
     rspec-sinatra (0.1.2)
       templater (>= 1.0.0)
     rspec-support (3.5.0)
-    rspec_junit_formatter (0.2.3)
-      builder (< 4)
-      rspec-core (>= 2, < 4, != 2.12.0)
     rubocop (0.41.1)
       parser (>= 2.3.1.1, < 3.0)
       powerpack (~> 0.1)
@@ -146,7 +142,6 @@ DEPENDENCIES
   rspec
   rspec-mocks
   rspec-sinatra
-  rspec_junit_formatter
   rubocop
   sinatra
 
diff --git a/rubocop.json b/rubocop.json
deleted file mode 100644
index 511287f..0000000
--- a/rubocop.json
+++ /dev/null
@@ -1 +0,0 @@
-{"metadata":{"rubocop_version":"0.41.1","ruby_engine":"ruby","ruby_version":"2.2.5","ruby_patchlevel":"319","ruby_platform":"x86_64-darwin15"},"files":[{"path":"config.ru","offenses":[]},{"path":"Gemfile","offenses":[]},{"path":"Guardfile","offenses":[]},{"path":"lib/api.rb","offenses":[]},{"path":"lib/ping_checker.rb","offenses":[{"severity":"convention","message":"Extra empty line detected at class body beginning.","cop_name":"Style/EmptyLinesAroundClassBody","corrected":false,"location":{"line":2,"column":1,"length":1}},{"severity":"convention","message":"Space inside square brackets detected.","cop_name":"Style/SpaceInsideBrackets","corrected":false,"location":{"line":4,"column":10,"length":1}}]},{"path":"lib/server.rb","offenses":[]},{"path":"lib/signature_verifier.rb","offenses":[]},{"path":"spec/api_spec.rb","offenses":[]},{"path":"spec/ping_checker_spec.rb","offenses":[]},{"path":"spec/server_spec.rb","offenses":[]},{"path":"spec/signature_verifier_spec.rb","offenses":[]},{"path":"spec/spec_helper.rb","offenses":[]}],"summary":{"offense_count":2,"target_file_count":12,"inspected_file_count":12}}
\ No newline at end of file