diff --git a/Gemfile b/Gemfile
index 4b79c7f..55514b0 100644
--- a/Gemfile
+++ b/Gemfile
@@ -75,7 +75,7 @@ group :development, :test do
   # We can relax this brakeman dependency after we have deployed a hybrid
   # cookie serializer and allowed a chance for cookies to be stored as JSON.
   gem 'brakeman', '4.5.1', require: false
-  gem 'rubocop', '0.52.1', require: false
+  gem 'rubocop', '1.18.4', require: false
   gem 'rubocop-rspec', '1.22.2', require: false
 end
 
diff --git a/Gemfile.lock b/Gemfile.lock
index 84781b8..278aab4 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -276,14 +276,13 @@ GEM
       shellany (~> 0.0)
     oauth (0.5.5)
     parallel (1.20.1)
-    parser (2.7.2.0)
+    parser (3.0.2.0)
       ast (~> 2.4.1)
     paul_bunyan (1.6.0)
       request_store
     pg (1.2.3)
     phantomjs (1.9.7.1)
     power_assert (2.0.0)
-    powerpack (0.1.3)
     protobuf-cucumber (3.10.8)
       activesupport (>= 3.2)
       middleware
@@ -347,6 +346,7 @@ GEM
       redis (>= 3.0.4)
     redis-objects (1.5.0)
       redis (~> 4.0)
+    regexp_parser (2.1.1)
     request_store (1.5.0)
       rack (>= 1.4)
     responders (2.4.1)
@@ -396,13 +396,17 @@ GEM
       rspec-mocks (~> 3.10)
       rspec-support (~> 3.10)
     rspec-support (3.10.2)
-    rubocop (0.52.1)
+    rubocop (1.18.4)
       parallel (~> 1.10)
-      parser (>= 2.4.0.2, < 3.0)
-      powerpack (~> 0.1)
+      parser (>= 3.0.0.0)
       rainbow (>= 2.2.2, < 4.0)
+      regexp_parser (>= 1.8, < 3.0)
+      rexml
+      rubocop-ast (>= 1.8.0, < 2.0)
       ruby-progressbar (~> 1.7)
-      unicode-display_width (~> 1.0, >= 1.0.1)
+      unicode-display_width (>= 1.4.0, < 3.0)
+    rubocop-ast (1.8.0)
+      parser (>= 3.0.1.1)
     rubocop-rspec (1.22.2)
       rubocop (>= 0.52.1)
     ruby-progressbar (1.11.0)
@@ -466,7 +470,7 @@ GEM
       thread_safe (~> 0.1)
     uglifier (4.2.0)
       execjs (>= 0.3.0, < 3)
-    unicode-display_width (1.7.0)
+    unicode-display_width (2.0.0)
     vegas (0.1.11)
       rack (>= 1.0.0)
     webmock (3.12.2)
@@ -533,7 +537,7 @@ DEPENDENCIES
   rspec-collection_matchers
   rspec-its
   rspec-rails
-  rubocop (= 0.52.1)
+  rubocop (= 1.18.4)
   rubocop-rspec (= 1.22.2)
   rufus-scheduler (= 3.4.2)
   sass-rails (~> 5.0.0)