diff --git a/config_defaults.yml b/config_defaults.yml
index 6f2b20b08f38473b40e08c3a2758e323d8d5c156..956af2b1bad408bc4a3f2ce56fabcc343c13b3f5 100644
--- a/config_defaults.yml
+++ b/config_defaults.yml
@@ -614,7 +614,9 @@ Gemfile:
     ':system_tests':
       - gem: 'puppet_litmus'
         version: '< 1.0.0'
-        platforms: ruby
+        platforms: 
+          - ruby
+          - x64_mingw
       - gem: 'serverspec'
         version: '~> 2.41'
 .gitlab-ci.yml: