diff --git a/config_defaults.yml b/config_defaults.yml
index 4b9f493e575f2740b36da9b1f55ef8a9b9840fd6..3127fa74e83b78b0bf29cdd800c759c1696be57d 100644
--- a/config_defaults.yml
+++ b/config_defaults.yml
@@ -541,6 +541,8 @@ Gemfile:
         version: '~> 2.1'
       - gem: 'metadata-json-lint'
         version: '~> 4.0'
+      - gem: 'json-schema'
+        version: '< 5.1.1'
       - gem: 'rspec-puppet-facts'
         version: '~> 4.0'
       - gem: 'dependency_checker'