diff --git a/Gemfile.lock b/Gemfile.lock
index a788422..e1b0137 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -13,7 +13,7 @@ GEM
   specs:
     addressable (2.8.1)
       public_suffix (>= 2.0.2, < 6.0)
-    ast (2.3.0)
+    ast (2.4.2)
     crack (0.4.3)
       safe_yaml (~> 1.0.0)
     diff-lcs (1.3)
@@ -28,17 +28,18 @@ GEM
       mime-types-data (~> 3.2015)
     mime-types-data (3.2016.0521)
     netrc (0.11.0)
-    parser (2.4.0.0)
-      ast (~> 2.2)
-    powerpack (0.1.1)
+    parallel (1.23.0)
+    parser (3.2.2.0)
+      ast (~> 2.4.1)
     public_suffix (5.0.0)
-    rainbow (2.2.2)
-      rake
+    rainbow (3.1.1)
     rake (12.3.3)
+    regexp_parser (2.8.0)
     rest-client (2.0.2)
       http-cookie (>= 1.0.2, < 2.0)
       mime-types (>= 1.16, < 4.0)
       netrc (~> 0.8)
+    rexml (3.2.5)
     rspec (3.5.0)
       rspec-core (~> 3.5.0)
       rspec-expectations (~> 3.5.0)
@@ -52,21 +53,27 @@ GEM
       diff-lcs (>= 1.2.0, < 2.0)
       rspec-support (~> 3.5.0)
     rspec-support (3.5.0)
-    rubocop (0.48.1)
-      parser (>= 2.3.3.1, < 3.0)
-      powerpack (~> 0.1)
-      rainbow (>= 1.99.1, < 3.0)
+    rubocop (1.50.2)
+      json (~> 2.3)
+      parallel (~> 1.10)
+      parser (>= 3.2.0.0)
+      rainbow (>= 2.2.2, < 4.0)
+      regexp_parser (>= 1.8, < 3.0)
+      rexml (>= 3.2.5, < 4.0)
+      rubocop-ast (>= 1.28.0, < 2.0)
       ruby-progressbar (~> 1.7)
-      unicode-display_width (~> 1.0, >= 1.0.1)
-    ruby-progressbar (1.8.1)
+      unicode-display_width (>= 2.4.0, < 3.0)
+    rubocop-ast (1.28.0)
+      parser (>= 3.2.1.0)
+    ruby-progressbar (1.13.0)
     safe_yaml (1.0.4)
-    terminal-table (1.7.3)
-      unicode-display_width (~> 1.1.1)
+    terminal-table (3.0.2)
+      unicode-display_width (>= 1.1.1, < 3)
     thor (0.19.4)
     unf (0.1.4)
       unf_ext
     unf_ext (0.0.7.4)
-    unicode-display_width (1.1.3)
+    unicode-display_width (2.4.2)
     webmock (3.0.1)
       addressable (>= 2.3.6)
       crack (>= 0.3.2)