1 files changed, 2 insertions, 0 deletions
diff --git a/include/mruby.h b/include/mruby.h
index 73c38cf1d..925344502 100644
--- a/include/mruby.h
+++ b/include/mruby.h
@@ -74,6 +74,8 @@ struct mrb_context {
   int rsize;
   struct RProc **ensure;
   int esize;
+
+  struct RFiber *fib;
 };
 
 enum gc_state {