diff --git a/Gemfile.lock b/Gemfile.lock
index 5435498..203758e 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -12,7 +12,7 @@ GEM
       i18n (~> 0.7)
       minitest (~> 5.1)
       tzinfo (~> 1.1)
-    ast (2.3.0)
+    ast (2.4.0)
     awesome_print (1.7.0)
     byebug (9.0.5)
     codeclimate-test-reporter (0.6.0)
@@ -24,9 +24,10 @@ GEM
     json (2.0.2)
     method_source (0.8.2)
     minitest (5.9.0)
-    parser (2.3.1.2)
-      ast (~> 2.2)
-    powerpack (0.1.1)
+    parallel (1.13.0)
+    parser (2.6.5.0)
+      ast (~> 2.4.0)
+    powerpack (0.1.2)
     pry (0.10.4)
       coderay (~> 1.1.0)
       method_source (~> 0.8.1)
@@ -34,15 +35,17 @@ GEM
     pry-byebug (3.4.0)
       byebug (~> 9.0)
       pry (~> 0.10)
-    rainbow (2.1.0)
+    rainbow (2.2.2)
+      rake
     rake (11.2.2)
-    rubocop (0.42.0)
-      parser (>= 2.3.1.1, < 3.0)
+    rubocop (0.50.0)
+      parallel (~> 1.10)
+      parser (>= 2.3.3.1, < 3.0)
       powerpack (~> 0.1)
-      rainbow (>= 1.99.1, < 3.0)
+      rainbow (>= 2.2.2, < 3.0)
       ruby-progressbar (~> 1.7)
       unicode-display_width (~> 1.0, >= 1.0.1)
-    ruby-progressbar (1.8.1)
+    ruby-progressbar (1.10.1)
     simplecov (0.12.0)
       docile (~> 1.1.0)
       json (>= 1.8, < 3)
@@ -52,7 +55,7 @@ GEM
     thread_safe (0.3.5)
     tzinfo (1.2.2)
       thread_safe (~> 0.1)
-    unicode-display_width (1.1.1)
+    unicode-display_width (1.6.0)
 
 PLATFORMS
   ruby