1 files changed, 4 insertions, 0 deletions
diff --git a/ractor.rb b/ractor.rb
index ca09aee7be..0867f1a9d1 100644
--- a/ractor.rb
+++ b/ractor.rb
@@ -51,6 +51,10 @@ class Ractor
     }
   end
 
+  def self.make_shareable(obj)
+    obj.freeze
+  end
+
   # Multiplex multiple Ractor communications.
   #
   #   r, obj = Ractor.select(r1, r2)