diff --git a/.ruby-version b/.ruby-version
index bea438e..a0891f5 100644
--- a/.ruby-version
+++ b/.ruby-version
@@ -1 +1 @@
-3.3.1
+3.3.4
diff --git a/Gemfile b/Gemfile
index b4e2a20..7f4f5e9 100644
--- a/Gemfile
+++ b/Gemfile
@@ -1,3 +1,5 @@
-source "https://rubygems.org"
+# frozen_string_literal: true
+
+source 'https://rubygems.org'
 
 gemspec
diff --git a/gc_ruboconfig.gemspec b/gc_ruboconfig.gemspec
index 9c47faa..5208219 100644
--- a/gc_ruboconfig.gemspec
+++ b/gc_ruboconfig.gemspec
@@ -2,7 +2,7 @@
 
 Gem::Specification.new do |spec|
   spec.name          = 'gc_ruboconfig'
-  spec.version       = '5.0.2'
+  spec.version       = '5.0.3'
   spec.summary       = "GoCardless's shared Rubocop configuration, conforming to our house style"
   spec.authors       = %w[GoCardless]
   spec.homepage      = 'https://github.com/gocardless/ruboconfig'
diff --git a/rails.yml b/rails.yml
index 4d75e69..21cc47b 100644
--- a/rails.yml
+++ b/rails.yml
@@ -1,5 +1,7 @@
-require:
+plugins:
   - rubocop-rails
+
+require:
   - rubocop-rspec_rails
 
 Rails/AddColumnIndex:
diff --git a/rubocop.yml b/rubocop.yml
index e0c0308..78010bf 100644
--- a/rubocop.yml
+++ b/rubocop.yml
@@ -1,6 +1,8 @@
-require:
+plugins:
   - rubocop-rspec
   - rubocop-performance
+
+require:
   - rubocop-factory_bot
 
 AllCops:
diff --git a/validate_config.rb b/validate_config.rb
index a293b8c..ed12ee2 100644
--- a/validate_config.rb
+++ b/validate_config.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'rubygems'
 
 Bundler.require(:default)