diff --git a/platformio.ini b/platformio.ini
index 73ea53f..6699f0b 100644
--- a/platformio.ini
+++ b/platformio.ini
@@ -39,7 +39,7 @@ lib_deps =
   BatteryMonitor=symlink://open-x4-sdk/libs/hardware/BatteryMonitor
   InputManager=symlink://open-x4-sdk/libs/hardware/InputManager
   EInkDisplay=symlink://open-x4-sdk/libs/display/EInkDisplay
-  ArduinoJson
+  ArduinoJson @ 7.4.2
 
 [env:default]
 extends = base