diff --git a/platformio.ini b/platformio.ini
index 4e3217d37..0859d2fe4 100644
--- a/platformio.ini
+++ b/platformio.ini
@@ -26,6 +26,7 @@ build_flags =
     -D_TASK_STD_FUNCTION=1
     -D_TASK_THREAD_SAFE=1
     -DCONFIG_ASYNC_TCP_EVENT_QUEUE_SIZE=128
+    -DCONFIG_ASYNC_TCP_QUEUE_SIZE=128
     -Wall -Wextra -Wunused -Wmisleading-indentation -Wduplicated-cond -Wlogical-op -Wnull-dereference
 ;   Have to remove -Werror because of
 ;   https://github.com/espressif/arduino-esp32/issues/9044 and
@@ -37,7 +38,7 @@ build_unflags =
     -std=gnu++11
 
 lib_deps =
-    mathieucarbou/ESP Async WebServer @ 2.9.3
+    mathieucarbou/ESP Async WebServer @ 2.9.4
     bblanchon/ArduinoJson @ 7.0.4
     https://github.com/bertmelis/espMqttClient.git#v1.6.0
     nrf24/RF24 @ 1.4.8