diff --git a/Gemfile b/Gemfile
index feac77b5..dc582672 100644
--- a/Gemfile
+++ b/Gemfile
@@ -33,7 +33,7 @@ gem 'slim', '>= 2.0', require: false
 gem 'rubydns', '~> 2.0.2', require: false
 
 # Code Quality
-gem 'rubocop', '~> 1.24', require: false
+gem 'rubocop', '~> 1.38', require: false
 gem 'rubocop-performance', '~> 1.13', require: false
 gem 'simplecov', '~> 0.21', require: false
 
diff --git a/Gemfile.lock b/Gemfile.lock
index 330e31c8..15e206c0 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -132,6 +132,7 @@ GEM
       concurrent-ruby (~> 1.0)
     interception (0.5)
     io-event (1.0.2)
+    json (2.6.2)
     kramdown (2.3.1)
       rexml
     lazy_priority_queue (0.1.1)
@@ -160,8 +161,8 @@ GEM
       padrino-support (= 0.15.1)
       tilt (>= 1.4.1, < 3)
     padrino-support (0.15.1)
-    parallel (1.21.0)
-    parser (3.1.0.0)
+    parallel (1.22.1)
+    parser (3.1.2.1)
       ast (~> 2.4.1)
     parslet (2.0.0)
     pry (0.14.1)
@@ -186,7 +187,7 @@ GEM
     rb-inotify (0.10.1)
       ffi (~> 1.0)
     redcarpet (3.5.1)
-    regexp_parser (2.2.0)
+    regexp_parser (2.6.0)
     rexml (3.2.5)
     rgl (0.5.7)
       lazy_priority_queue (~> 0.1.0)
@@ -204,17 +205,18 @@ GEM
       diff-lcs (>= 1.2.0, < 2.0)
       rspec-support (~> 3.10.0)
     rspec-support (3.10.3)
-    rubocop (1.25.0)
+    rubocop (1.38.0)
+      json (~> 2.3)
       parallel (~> 1.10)
-      parser (>= 3.1.0.0)
+      parser (>= 3.1.2.1)
       rainbow (>= 2.2.2, < 4.0)
       regexp_parser (>= 1.8, < 3.0)
-      rexml
-      rubocop-ast (>= 1.15.1, < 2.0)
+      rexml (>= 3.2.5, < 4.0)
+      rubocop-ast (>= 1.23.0, < 2.0)
       ruby-progressbar (~> 1.7)
       unicode-display_width (>= 1.4.0, < 3.0)
-    rubocop-ast (1.15.1)
-      parser (>= 3.0.1.1)
+    rubocop-ast (1.23.0)
+      parser (>= 3.1.1.0)
     rubocop-performance (1.13.2)
       rubocop (>= 1.7.0, < 2.0)
       rubocop-ast (>= 0.4.0)
@@ -253,7 +255,7 @@ GEM
       parslet (>= 1.8.0, < 3.0.0)
     tzinfo (2.0.4)
       concurrent-ruby (~> 1.0)
-    unicode-display_width (2.1.0)
+    unicode-display_width (2.3.0)
     webrick (1.7.0)
     xpath (3.2.0)
       nokogiri (~> 1.8)
@@ -281,7 +283,7 @@ DEPENDENCIES
   rake (~> 13.0)
   redcarpet (>= 3.1)
   rspec (~> 3.10)
-  rubocop (~> 1.24)
+  rubocop (~> 1.38)
   rubocop-performance (~> 1.13)
   rubydns (~> 2.0.2)
   sassc (~> 2)