diff --git a/Gemfile b/Gemfile
index 0a7542d09..e4ed0cd65 100644
--- a/Gemfile
+++ b/Gemfile
@@ -26,7 +26,7 @@ group :development, :unit_tests do
   gem 'mocha', '< 1.2.0'
   gem 'rspec-puppet-facts'
   gem 'simplecov'
-  gem 'parallel_tests'
+  gem 'parallel_tests', '2.9.0' if RUBY_VERSION < '2.0.0'
   gem 'rubocop', '0.41.2' if RUBY_VERSION < '2.0.0'
   gem 'rubocop' if RUBY_VERSION >= '2.0.0'
   gem 'rubocop-rspec', '~> 1.6' if RUBY_VERSION >= '2.3.0'
diff --git a/spec/aliases/ipv4_spec.rb b/spec/aliases/ipv4_spec.rb
index e767b45b8..f9022a411 100644
--- a/spec/aliases/ipv4_spec.rb
+++ b/spec/aliases/ipv4_spec.rb
@@ -20,6 +20,8 @@
         'nope',
         '77',
         '4.4.4',
+        '9999.9999.9999.9999',
+        '192.168.256.1',
         '2001:0db8:85a3:0000:0000:8a2e:0370:73342001:0db8:85a3:0000:0000:8a2e:0370:7334'
       ].each do |value|
         describe value.inspect do
diff --git a/types/compat/ipv4.pp b/types/compat/ipv4.pp
index 1d72ebd09..c0ddbfed9 100644
--- a/types/compat/ipv4.pp
+++ b/types/compat/ipv4.pp
@@ -1,2 +1,2 @@
 # Emulate the validate_ipv4_address and is_ipv4_address functions
-type Stdlib::Compat::Ipv4 = Pattern[/^(\d+)\.(\d+)\.(\d+)\.(\d+)$/]
+type Stdlib::Compat::Ipv4 = Pattern[/^(([0-9](?!\d)|[1-9][0-9](?!\d)|1[0-9]{2}(?!\d)|2[0-4][0-9](?!\d)|25[0-5](?!\d))[.]?){4}$/]