diff --git a/platformio.ini b/platformio.ini
index a2a22fe7..fe66f3a5 100644
--- a/platformio.ini
+++ b/platformio.ini
@@ -29,6 +29,7 @@ monitor_baud = 115200
 upload_speed = 921600
 lib_deps =
   ArduinoJson
+  https://github.com/me-no-dev/ESPAsyncTCP.git
   ESPAsyncWebServer
   OneWire
   DallasTemperature