diff --git a/src/main.zig b/src/main.zig
index d0c2e98..c5586ec 100644
--- a/src/main.zig
+++ b/src/main.zig
@@ -10,6 +10,7 @@ const io_worker_limit = 16;
 pub fn main(init: std.process.Init) !void {
     const allocator = std.heap.smp_allocator;
     app_threaded_io = Io.Threaded.init(allocator, .{
+        .async_limit = .limited(io_worker_limit),
         .concurrent_limit = .limited(io_worker_limit),
     });
     const io = app_threaded_io.io();