diff --git a/platformio.ini b/platformio.ini
index aaa352f..07946bc 100644
--- a/platformio.ini
+++ b/platformio.ini
@@ -24,7 +24,7 @@ build_flags =
 
 lib_deps =
     https://github.com/yubox-node-org/ESPAsyncWebServer
-    bblanchon/ArduinoJson @ ^6.19.4
+    bblanchon/ArduinoJson @ ^6.20.0
     https://github.com/bertmelis/espMqttClient.git#v1.3.3
     nrf24/RF24 @ ^1.4.5