1 files changed, 1 insertions, 0 deletions
diff --git a/method.h b/method.h
index 14ffecc398..b26caaa92d 100644
--- a/method.h
+++ b/method.h
@@ -177,6 +177,7 @@ struct rb_method_definition_struct {
     } body;
 
     ID original_id;
+    uintptr_t method_serial;
 };
 
 typedef struct rb_method_definition_struct rb_method_definition_t;