diff --git a/lib/cheffish/chef_provider_base.rb b/lib/cheffish/chef_provider_base.rb
index 8f46a8e..877e991 100644
--- a/lib/cheffish/chef_provider_base.rb
+++ b/lib/cheffish/chef_provider_base.rb
@@ -60,6 +60,9 @@ def resource_to_json(resource)
       json = resource.raw_json || {}
       keys.each do |json_key, resource_key|
         value = resource.send(resource_key)
+        # This takes care of Chef ImmutableMash and ImmutableArray
+        value = value.to_hash if value.is_a?(Hash)
+        value = value.to_a if value.is_a?(Array)
         json[json_key] = value if value
       end
       json