diff --git a/minimart/drivers/tcp.rkt b/minimart/drivers/tcp.rkt
index 7ccf910..912b5f2 100644
--- a/minimart/drivers/tcp.rkt
+++ b/minimart/drivers/tcp.rkt
@@ -89,7 +89,7 @@
 
 (define (spawn-tcp-listener server-addr)
   (match-define (tcp-listener port) server-addr)
-  (define listener (tcp:tcp-listen port 4 #t))
+  (define listener (tcp:tcp-listen port 128 #t))
   (define control-ch (make-channel))
   (thread (lambda () (tcp-listener-thread control-ch listener server-addr)))
   (spawn tcp-listener-behavior