diff --git a/.gitignore b/.gitignore
index 68b0380..c7a3351 100644
--- a/.gitignore
+++ b/.gitignore
@@ -6,4 +6,13 @@ test/dummy/db/*.sqlite3-journal
 test/dummy/log/*.log
 test/dummy/tmp/
 
-test/dummy/public/system
\ No newline at end of file
+test/dummy/public/system
+
+# Mac
+.DS_Store
+
+# Windows
+.Thumbs.db
+
+# Rails
+Gemfile.lock
diff --git a/Gemfile.lock b/Gemfile.lock
deleted file mode 100644
index cd60cd1..0000000
--- a/Gemfile.lock
+++ /dev/null
@@ -1,208 +0,0 @@
-PATH
-  remote: .
-  specs:
-    gdpr_rails (0.2.1)
-      aasm
-      chartkick (= 2.3.4)
-      groupdate (= 4.0.0)
-      paperclip
-      rails (~> 5.1.4)
-      redcarpet
-      rubyzip (>= 1.0.0)
-      tilt
-      will_paginate
-
-GEM
-  remote: https://rubygems.org/
-  specs:
-    aasm (4.12.3)
-      concurrent-ruby (~> 1.0)
-    actioncable (5.1.6)
-      actionpack (= 5.1.6)
-      nio4r (~> 2.0)
-      websocket-driver (~> 0.6.1)
-    actionmailer (5.1.6)
-      actionpack (= 5.1.6)
-      actionview (= 5.1.6)
-      activejob (= 5.1.6)
-      mail (~> 2.5, >= 2.5.4)
-      rails-dom-testing (~> 2.0)
-    actionpack (5.1.6)
-      actionview (= 5.1.6)
-      activesupport (= 5.1.6)
-      rack (~> 2.0)
-      rack-test (>= 0.6.3)
-      rails-dom-testing (~> 2.0)
-      rails-html-sanitizer (~> 1.0, >= 1.0.2)
-    actionview (5.1.6)
-      activesupport (= 5.1.6)
-      builder (~> 3.1)
-      erubi (~> 1.4)
-      rails-dom-testing (~> 2.0)
-      rails-html-sanitizer (~> 1.0, >= 1.0.3)
-    activejob (5.1.6)
-      activesupport (= 5.1.6)
-      globalid (>= 0.3.6)
-    activemodel (5.1.6)
-      activesupport (= 5.1.6)
-    activerecord (5.1.6)
-      activemodel (= 5.1.6)
-      activesupport (= 5.1.6)
-      arel (~> 8.0)
-    activesupport (5.1.6)
-      concurrent-ruby (~> 1.0, >= 1.0.2)
-      i18n (>= 0.7, < 2)
-      minitest (~> 5.1)
-      tzinfo (~> 1.1)
-    addressable (2.5.2)
-      public_suffix (>= 2.0.2, < 4.0)
-    arel (8.0.0)
-    builder (3.2.3)
-    byebug (10.0.1)
-    capybara (2.18.0)
-      addressable
-      mini_mime (>= 0.1.3)
-      nokogiri (>= 1.3.3)
-      rack (>= 1.0.0)
-      rack-test (>= 0.5.4)
-      xpath (>= 2.0, < 4.0)
-    chartkick (2.3.4)
-    climate_control (0.2.0)
-    coderay (1.1.2)
-    concurrent-ruby (1.0.5)
-    coveralls (0.7.1)
-      multi_json (~> 1.3)
-      rest-client
-      simplecov (>= 0.7)
-      term-ansicolor
-      thor
-    crass (1.0.4)
-    docile (1.3.0)
-    domain_name (0.5.20180417)
-      unf (>= 0.0.5, < 1.0.0)
-    erubi (1.7.1)
-    globalid (0.4.1)
-      activesupport (>= 4.2.0)
-    groupdate (4.0.0)
-      activesupport (>= 4.2)
-    http-cookie (1.0.3)
-      domain_name (~> 0.5)
-    i18n (1.0.1)
-      concurrent-ruby (~> 1.0)
-    json (2.1.0)
-    loofah (2.2.2)
-      crass (~> 1.0.2)
-      nokogiri (>= 1.5.9)
-    mail (2.7.0)
-      mini_mime (>= 0.1.1)
-    method_source (0.9.0)
-    mime-types (3.1)
-      mime-types-data (~> 3.2015)
-    mime-types-data (3.2016.0521)
-    mimemagic (0.3.2)
-    mini_mime (1.0.0)
-    mini_portile2 (2.3.0)
-    minitest (5.11.3)
-    minitest-stub_any_instance (1.0.2)
-    multi_json (1.13.1)
-    mysql2 (0.4.6)
-    netrc (0.11.0)
-    nio4r (2.3.0)
-    nokogiri (1.8.2)
-      mini_portile2 (~> 2.3.0)
-    paperclip (6.0.0)
-      activemodel (>= 4.2.0)
-      activesupport (>= 4.2.0)
-      mime-types
-      mimemagic (~> 0.3.0)
-      terrapin (~> 0.6.0)
-    pry (0.11.3)
-      coderay (~> 1.1.0)
-      method_source (~> 0.9.0)
-    pry-byebug (3.6.0)
-      byebug (~> 10.0)
-      pry (~> 0.10)
-    public_suffix (3.0.2)
-    puma (3.11.2)
-    rack (2.0.4)
-    rack-test (1.0.0)
-      rack (>= 1.0, < 3)
-    rails (5.1.6)
-      actioncable (= 5.1.6)
-      actionmailer (= 5.1.6)
-      actionpack (= 5.1.6)
-      actionview (= 5.1.6)
-      activejob (= 5.1.6)
-      activemodel (= 5.1.6)
-      activerecord (= 5.1.6)
-      activesupport (= 5.1.6)
-      bundler (>= 1.3.0)
-      railties (= 5.1.6)
-      sprockets-rails (>= 2.0.0)
-    rails-dom-testing (2.0.3)
-      activesupport (>= 4.2.0)
-      nokogiri (>= 1.6)
-    rails-html-sanitizer (1.0.4)
-      loofah (~> 2.2, >= 2.2.2)
-    railties (5.1.6)
-      actionpack (= 5.1.6)
-      activesupport (= 5.1.6)
-      method_source
-      rake (>= 0.8.7)
-      thor (>= 0.18.1, < 2.0)
-    rake (12.3.1)
-    redcarpet (3.4.0)
-    rest-client (2.0.2)
-      http-cookie (>= 1.0.2, < 2.0)
-      mime-types (>= 1.16, < 4.0)
-      netrc (~> 0.8)
-    rubyzip (1.2.1)
-    simplecov (0.16.1)
-      docile (~> 1.1)
-      json (>= 1.8, < 3)
-      simplecov-html (~> 0.10.0)
-    simplecov-html (0.10.2)
-    sprockets (3.7.1)
-      concurrent-ruby (~> 1.0)
-      rack (> 1, < 3)
-    sprockets-rails (3.2.1)
-      actionpack (>= 4.0)
-      activesupport (>= 4.0)
-      sprockets (>= 3.0.0)
-    sqlite3 (1.3.13)
-    term-ansicolor (1.6.0)
-      tins (~> 1.0)
-    terrapin (0.6.0)
-      climate_control (>= 0.0.3, < 1.0)
-    thor (0.20.0)
-    thread_safe (0.3.6)
-    tilt (2.0.8)
-    tins (1.16.3)
-    tzinfo (1.2.5)
-      thread_safe (~> 0.1)
-    unf (0.1.4)
-      unf_ext
-    unf_ext (0.0.7.5)
-    websocket-driver (0.6.5)
-      websocket-extensions (>= 0.1.0)
-    websocket-extensions (0.1.3)
-    will_paginate (3.1.6)
-    xpath (3.0.0)
-      nokogiri (~> 1.8)
-
-PLATFORMS
-  ruby
-
-DEPENDENCIES
-  capybara (~> 2.18)
-  coveralls
-  gdpr_rails!
-  minitest-stub_any_instance
-  mysql2 (= 0.4.6)
-  nokogiri
-  pry-byebug
-  puma
-  sqlite3
-
-BUNDLED WITH
-   1.16.0
diff --git a/gdpr_rails.gemspec b/gdpr_rails.gemspec
index fe1a091..5187e36 100644
--- a/gdpr_rails.gemspec
+++ b/gdpr_rails.gemspec
@@ -16,7 +16,7 @@ Gem::Specification.new do |s|
 
   s.files = Dir["{app,config,db,lib}/**/*", "MIT-LICENSE", "Rakefile", "README.md"]
 
-  s.add_dependency "rails", "~> 5.1.4"
+  s.add_dependency "rails", ">= 5.1.4", "< 5.3"
   s.add_dependency "tilt"
   s.add_dependency "redcarpet"
   s.add_dependency "will_paginate"