diff --git a/.rubocop.yml b/.rubocop.yml
index 870a41b..84567a5 100644
--- a/.rubocop.yml
+++ b/.rubocop.yml
@@ -1,5 +1,3 @@
-inherit_from: .rubocop_todo.yml
-
 AllCops:
   StyleGuideCopsOnly: true
 
@@ -15,9 +13,8 @@ Style/Alias:
 Style/SignalException:
   Enabled: false
 
-# uncomment when fixed
-# Style/StringLiterals:
-#   EnforcedStyle: single_quotes
+Style/StringLiterals:
+  EnforcedStyle: single_quotes
 
 Style/TrivialAccessors:
   ExactNameMatch: true
diff --git a/.rubocop_todo.yml b/.rubocop_todo.yml
deleted file mode 100644
index f0de6d2..0000000
--- a/.rubocop_todo.yml
+++ /dev/null
@@ -1,13 +0,0 @@
-# This configuration was generated by
-# `rubocop --auto-gen-config`
-# on 2015-11-25 15:48:57 +0100 using RuboCop version 0.35.1.
-# The point is for the user to remove these configuration records
-# one by one as the offenses are removed from the code base.
-# Note that changes in the inspected code, or installation of new
-# versions of RuboCop, may require this file to be generated again.
-
-# Offense count: 15
-# Cop supports --auto-correct.
-# Configuration parameters: SupportedStyles.
-Style/StringLiterals:
-  EnforcedStyle: double_quotes
diff --git a/Gemfile b/Gemfile
index 429c07d..b87770d 100644
--- a/Gemfile
+++ b/Gemfile
@@ -1,4 +1,4 @@
-source "https://rubygems.org"
+source 'https://rubygems.org'
 
-gem "mediawiki_selenium", "~> 1.6.2"
-gem "rubocop", "~> 0.35.1", require: false
+gem 'mediawiki_selenium', '~> 1.6.2'
+gem 'rubocop', '~> 0.35.1', require: false
diff --git a/Rakefile b/Rakefile
index 4835bcd..3342a96 100644
--- a/Rakefile
+++ b/Rakefile
@@ -1,14 +1,14 @@
-require "bundler/setup"
+require 'bundler/setup'
 
-require "rubocop/rake_task"
+require 'rubocop/rake_task'
 RuboCop::RakeTask.new(:rubocop) do |task|
   # If you use mediawiki-vagrant, rubocop will by default use it's .rubocop.yml
   # The next line makes it explicit that you want .rubocop.yml from the
   # directory where `bundle exec rake` is executed:
-  task.options = ["-c", ".rubocop.yml"]
+  task.options = ['-c', '.rubocop.yml']
 end
 
 task default: [:test]
 
-desc "Run all build/tests commands (CI entry point)"
+desc 'Run all build/tests commands (CI entry point)'
 task test: [:rubocop]
diff --git a/tests/browser/features/support/env.rb b/tests/browser/features/support/env.rb
index 1760965..c1072b2 100644
--- a/tests/browser/features/support/env.rb
+++ b/tests/browser/features/support/env.rb
@@ -1,3 +1,3 @@
-require "mediawiki_selenium/cucumber"
-require "mediawiki_selenium/pages"
-require "mediawiki_selenium/step_definitions"
+require 'mediawiki_selenium/cucumber'
+require 'mediawiki_selenium/pages'
+require 'mediawiki_selenium/step_definitions'
diff --git a/tests/browser/features/support/pages/random_page.rb b/tests/browser/features/support/pages/random_page.rb
index 8d77e97..8dc4e90 100644
--- a/tests/browser/features/support/pages/random_page.rb
+++ b/tests/browser/features/support/pages/random_page.rb
@@ -12,6 +12,6 @@
 class PdfPage
   include PageObject
 
-  a(:download_as_pdf, text: "Download as PDF")
-  a(:download_the_file, text: "Download the file")
+  a(:download_as_pdf, text: 'Download as PDF')
+  a(:download_the_file, text: 'Download the file')
 end