diff --git a/exec/unarchive.lua b/exec/unarchive.lua
index 13d4296..d734727 100644
--- a/exec/unarchive.lua
+++ b/exec/unarchive.lua
@@ -47,5 +47,6 @@ while true do
   until rsize <= 1
  end
  print(fsize)
+ coroutine.yield()
 end
 fi:close()