diff --git a/Gemfile.lock b/Gemfile.lock
index 0d23dec..a83e3d6 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -41,7 +41,7 @@ GEM
       diff-lcs (>= 1.2.0, < 2.0)
       rspec-support (~> 3.10.0)
     rspec-support (3.10.0)
-    rubocop (1.14.0)
+    rubocop (1.15.0)
       parallel (~> 1.10)
       parser (>= 3.0.0.0)
       rainbow (>= 2.2.2, < 4.0)
@@ -75,7 +75,7 @@ DEPENDENCIES
   pry-byebug (~> 3.8)
   pry-doc (~> 1.0)
   rspec (~> 3.0)
-  rubocop (~> 1.14.0)
+  rubocop (~> 1.15.0)
   rubocop-rspec (~> 2.0, >= 2.0.1)
   simplecov (= 0.21.2)
 
diff --git a/cleanup_vendor.gemspec b/cleanup_vendor.gemspec
index 99d657f..24d9792 100644
--- a/cleanup_vendor.gemspec
+++ b/cleanup_vendor.gemspec
@@ -30,7 +30,7 @@ Gem::Specification.new do |spec|
   spec.add_development_dependency 'pry-byebug', '~> 3.8'
   spec.add_development_dependency 'pry-doc', '~> 1.0'
   spec.add_development_dependency 'rspec', '~> 3.0'
-  spec.add_development_dependency 'rubocop', '~> 1.14.0'
+  spec.add_development_dependency 'rubocop', '~> 1.15.0'
   spec.add_development_dependency 'rubocop-rspec', '~> 2.0', '>= 2.0.1'
   spec.add_development_dependency 'simplecov', '= 0.21.2'
 end