diff --git a/octocatalog-diff.gemspec b/octocatalog-diff.gemspec
index 665abf2..f77c2ca 100644
--- a/octocatalog-diff.gemspec
+++ b/octocatalog-diff.gemspec
@@ -1,6 +1,6 @@
 require 'json'
 
-DEFAULT_PUPPET_VERSION = '5.5.8'.freeze
+DEFAULT_PUPPET_VERSION = '5.5.22'.freeze
 
 Gem::Specification.new do |s|
   s.required_ruby_version = '>= 2.0.0'