diff --git a/platformio.ini b/platformio.ini
index 83ad044a..36a42a6d 100644
--- a/platformio.ini
+++ b/platformio.ini
@@ -41,7 +41,7 @@ build_unflags =
     -std=gnu++11
 
 lib_deps =
-    mathieucarbou/ESPAsyncWebServer @ 3.3.23
+    mathieucarbou/ESPAsyncWebServer @ 3.4.0
     bblanchon/ArduinoJson @ 7.2.1
     https://github.com/bertmelis/espMqttClient.git#v1.7.0
     nrf24/RF24 @ 1.4.10