diff --git a/lib/searchkick/relation.rb b/lib/searchkick/relation.rb
index f9e2d3b..4bd2798 100644
--- a/lib/searchkick/relation.rb
+++ b/lib/searchkick/relation.rb
@@ -199,6 +199,11 @@ module Searchkick
       !@execute.nil?
     end
 
+    # TODO uncomment in 6.0
+    # def to_yaml
+    #   private_execute.to_a.to_yaml
+    # end
+
     private
 
     def private_execute
diff --git a/test/relation_test.rb b/test/relation_test.rb
index 9972c27..246d2af 100644
--- a/test/relation_test.rb
+++ b/test/relation_test.rb
@@ -33,4 +33,10 @@ class RelationTest < Minitest::Test
     store_names ["Product A", "Product B"]
     assert_equal ["Product A", "Product B"], Product.search("product").pluck(:name).sort
   end
+
+  # TODO uncomment in 6.0
+  # def test_to_yaml
+  #   store_names ["Product A", "Product B"]
+  #   assert_equal Product.all.to_yaml, Product.search("product").to_yaml
+  # end
 end
--
libgit2 0.21.0