diff --git a/2019/.rubocop.yml b/2019/.rubocop.yml
new file mode 100644
index 0000000..950c872
--- /dev/null
+++ b/2019/.rubocop.yml
@@ -0,0 +1,20 @@
+Layout/AlignArguments:
+  EnforcedStyle: with_fixed_indentation
+
+Metrics/LineLength:
+  Enabled: false
+
+Naming/MethodParameterName:
+  MinNameLength: 1
+
+Style/ClassAndModuleChildren:
+  Enabled: false
+
+Style/Documentation:
+  Enabled: false
+
+Style/NumericLiterals:
+  Enabled: false
+
+Style/TrailingCommaInArguments:
+  EnforcedStyleForMultiline: consistent_comma
diff --git a/2019/Gemfile b/2019/Gemfile
new file mode 100644
index 0000000..2db302d
--- /dev/null
+++ b/2019/Gemfile
@@ -0,0 +1,6 @@
+# frozen_string_literal: true
+
+source 'https://rubygems.org'
+git_source(:github) { |repo| "https://github.com/#{repo}.git" }
+
+gem 'rubocop', '~> 0.77.0'
diff --git a/2019/Gemfile.lock b/2019/Gemfile.lock
new file mode 100644
index 0000000..cf8963b
--- /dev/null
+++ b/2019/Gemfile.lock
@@ -0,0 +1,27 @@
+GEM
+  remote: https://rubygems.org/
+  specs:
+    ast (2.4.0)
+    jaro_winkler (1.5.4)
+    parallel (1.19.1)
+    parser (2.6.5.0)
+      ast (~> 2.4.0)
+    rainbow (3.0.0)
+    rubocop (0.77.0)
+      jaro_winkler (~> 1.5.1)
+      parallel (~> 1.10)
+      parser (>= 2.6)
+      rainbow (>= 2.2.2, < 4.0)
+      ruby-progressbar (~> 1.7)
+      unicode-display_width (>= 1.4.0, < 1.7)
+    ruby-progressbar (1.10.1)
+    unicode-display_width (1.6.0)
+
+PLATFORMS
+  ruby
+
+DEPENDENCIES
+  rubocop (~> 0.77.0)
+
+BUNDLED WITH
+   2.0.2