diff --git a/.rubocop.yml b/.rubocop.yml
index 91b2a9f..ccd6d11 100644
--- a/.rubocop.yml
+++ b/.rubocop.yml
@@ -76,6 +76,9 @@ Style/RedundantSelf:
 Metrics/MethodLength:
   Enabled: false
 
+Metrics/ModuleLength:
+  Enabled: false
+
 # DISABLED - not useful
 Style/WhileUntilModifier:
   Enabled: false
@@ -318,7 +321,7 @@ Style/EmptyLiteral:
 Metrics/LineLength:
   Enabled: false
 
-Style/MethodCallParentheses:
+Style/MethodCallWithoutArgsParentheses:
   Enabled: false
 
 Style/MethodDefParentheses:
diff --git a/Gemfile b/Gemfile
index eb72b2b..69c8cc8 100644
--- a/Gemfile
+++ b/Gemfile
@@ -34,6 +34,6 @@ group :development do
   end
 end
 
-gem 'json',      '<= 1.8'   if RUBY_VERSION < '2.0.0'
-gem 'json_pure', '<= 2.0.1' if RUBY_VERSION < '2.0.0'
-gem 'rubocop'               if RUBY_VERSION >= '2.0.0'
+gem 'json',      '<= 1.8'    if RUBY_VERSION < '2.0.0'
+gem 'json_pure', '<= 2.0.1'  if RUBY_VERSION < '2.0.0'
+gem 'rubocop',   '<= 0.47.0' if RUBY_VERSION >= '2.0.0'