diff --git a/lib/ruby/signature/test/hook.rb b/lib/ruby/signature/test/hook.rb
index ef0cc3182..6ce2bdc71 100644
--- a/lib/ruby/signature/test/hook.rb
+++ b/lib/ruby/signature/test/hook.rb
@@ -289,7 +289,7 @@ def delegation(name, method_types, method_name)
             end
 
             result
-          end
+          end.ruby2_keywords
         end
 
         def verify(instance_method: nil, singleton_method: nil, types:)
diff --git a/test/ruby/signature/test_test.rb b/test/ruby/signature/test_test.rb
index c5700caba..f162111a2 100644
--- a/test/ruby/signature/test_test.rb
+++ b/test/ruby/signature/test_test.rb
@@ -3,6 +3,8 @@
 require "ruby/signature/test"
 require "logger"
 
+return unless Gem::Version.new(RUBY_VERSION) >= Gem::Version.new('2.7.0')
+
 class Ruby::Signature::TestTest < Minitest::Test
   include TestHelper