diff --git a/Gemfile b/Gemfile
index 856b39c..f2b60cd 100644
--- a/Gemfile
+++ b/Gemfile
@@ -13,6 +13,6 @@ group :test do
   gem 'pry'
   gem 'rb-readline'
   gem 'rspec', '~> 3.12.0'
-  gem 'rubocop', '~> 1.55'
+  gem 'rubocop', '~> 1.56'
   gem 'webmock', '~> 3.13'
 end
diff --git a/Gemfile.lock b/Gemfile.lock
index 11f156f..ad6b40a 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -11,6 +11,7 @@ GEM
     addressable (2.8.1)
       public_suffix (>= 2.0.2, < 6.0)
     ast (2.4.2)
+    base64 (0.1.1)
     coderay (1.1.3)
     commander (4.6.0)
       highline (~> 2.0.0)
@@ -74,7 +75,8 @@ GEM
       diff-lcs (>= 1.2.0, < 2.0)
       rspec-support (~> 3.12.0)
     rspec-support (3.12.0)
-    rubocop (1.55.1)
+    rubocop (1.56.0)
+      base64 (~> 0.1.1)
       json (~> 2.3)
       language_server-protocol (>= 3.17.0)
       parallel (~> 1.10)
@@ -111,7 +113,7 @@ DEPENDENCIES
   rake
   rb-readline
   rspec (~> 3.12.0)
-  rubocop (~> 1.55)
+  rubocop (~> 1.56)
   simplecov (~> 0.22.0)
   simplecov-html (~> 0.12.3)
   simplecov-lcov (~> 0.8.0)