diff --git a/lib/puppet/modulebuilder/builder.rb b/lib/puppet/modulebuilder/builder.rb
index eb19d85..179b13b 100644
--- a/lib/puppet/modulebuilder/builder.rb
+++ b/lib/puppet/modulebuilder/builder.rb
@@ -376,7 +376,7 @@ def validate_ustar_path!(path)
 
       return unless path.bytesize > 100 || prefix.bytesize > 155
 
-      raise ArgumentError, \
+      raise ArgumentError,
             format("'%<path>s' could not be split at a directory separator into two " \
                    'parts, the first having a maximum length of 155 bytes and the ' \
                    'second having a maximum length of 100 bytes.', path: path)
diff --git a/puppet-modulebuilder.gemspec b/puppet-modulebuilder.gemspec
index f726f5f..c8b4ced 100644
--- a/puppet-modulebuilder.gemspec
+++ b/puppet-modulebuilder.gemspec
@@ -27,7 +27,7 @@ Gem::Specification.new do |spec|
   spec.add_dependency 'minitar', '>= 0.9', '< 2'
   spec.add_dependency 'pathspec', '>= 0.2.1', '< 3.0.0'
 
-  spec.add_development_dependency 'voxpupuli-rubocop', '~> 3.0.0'
+  spec.add_development_dependency 'voxpupuli-rubocop', '~> 4.0.0'
 
   spec.required_ruby_version = Gem::Requirement.new('>= 3.1.0')
 end