ext/grpc/rb_channel_args.c in grpc-0.6.1 vs ext/grpc/rb_channel_args.c in grpc-0.9.2

@@ -31,10 +31,11 @@
  *
  */
 
 #include "rb_channel_args.h"
 
-#include <ruby.h>
+#include <ruby/ruby.h>
+
 #include <grpc/grpc.h>
 
 #include "rb_grpc.h"
 
 static rb_data_type_t grpc_rb_channel_args_data_type = {