diff --git a/test/stringio/test_ractor.rb b/test/stringio/test_ractor.rb
index 489bb8c0e4..6acf53fb0a 100644
--- a/test/stringio/test_ractor.rb
+++ b/test/stringio/test_ractor.rb
@@ -8,6 +8,10 @@ class TestStringIOInRactor < Test::Unit::TestCase
 
   def test_ractor
     assert_in_out_err([], <<-"end;", ["true"], [])
+      class Ractor
+        alias value take unless method_defined? :value # compat with Ruby 3.4 and olders
+      end
+
       require "stringio"
       $VERBOSE = nil
       r = Ractor.new do