diff --git a/.rubocop.yml b/.rubocop.yml
index 1d679e3..84e396f 100644
--- a/.rubocop.yml
+++ b/.rubocop.yml
@@ -1,3 +1,7 @@
+inherit_mode:
+  merge:
+    - Exclude
+
 AllCops:
   TargetRubyVersion: 2.2
   DisabledByDefault: true
diff --git a/rack-attack.gemspec b/rack-attack.gemspec
index f63c35c..233e9ea 100644
--- a/rack-attack.gemspec
+++ b/rack-attack.gemspec
@@ -38,7 +38,7 @@ Gem::Specification.new do |s|
   s.add_development_dependency 'rack-test'
   s.add_development_dependency 'rake'
   s.add_development_dependency 'redis-activesupport'
-  s.add_development_dependency "rubocop", "0.55.0"
+  s.add_development_dependency "rubocop", "0.57.2"
   s.add_development_dependency "timecop"
 
   # Need to explicitly depend on guard because guard-minitest doesn't declare