diff --git a/Gemfile.lock b/Gemfile.lock
index e7f1fea..a587c72 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -27,21 +27,21 @@ PATH
 GEM
   remote: https://rubygems.org/
   specs:
-    ast (2.4.1)
+    ast (2.4.2)
     diff-lcs (1.4.4)
     equatable (0.5.0)
     kramdown (1.16.2)
     necromancer (0.4.0)
     parallel (1.20.1)
-    parser (3.0.0.0)
+    parser (3.0.2.0)
       ast (~> 2.4.1)
     pastel (0.7.2)
       equatable (~> 0.5.0)
       tty-color (~> 0.4.0)
     rainbow (3.0.0)
     rake (13.0.3)
-    regexp_parser (2.0.3)
-    rexml (3.2.4)
+    regexp_parser (2.1.1)
+    rexml (3.2.5)
     rouge (3.25.0)
     rspec (3.10.0)
       rspec-core (~> 3.10.0)
@@ -56,17 +56,17 @@ GEM
       diff-lcs (>= 1.2.0, < 2.0)
       rspec-support (~> 3.10.0)
     rspec-support (3.10.0)
-    rubocop (1.8.0)
+    rubocop (1.18.4)
       parallel (~> 1.10)
       parser (>= 3.0.0.0)
       rainbow (>= 2.2.2, < 4.0)
       regexp_parser (>= 1.8, < 3.0)
       rexml
-      rubocop-ast (>= 1.2.0, < 2.0)
+      rubocop-ast (>= 1.8.0, < 2.0)
       ruby-progressbar (~> 1.7)
       unicode-display_width (>= 1.4.0, < 3.0)
-    rubocop-ast (1.4.0)
-      parser (>= 2.7.1.5)
+    rubocop-ast (1.8.0)
+      parser (>= 3.0.1.1)
     rubocop-performance (1.9.2)
       rubocop (>= 0.90.0, < 2.0)
       rubocop-ast (>= 0.4.0)