diff --git a/platformio.ini b/platformio.ini
index af2ceb0..4fc0abd 100644
--- a/platformio.ini
+++ b/platformio.ini
@@ -15,7 +15,7 @@ src_dir = pio/src
 
 [common_env_data]
 lib_deps = 
-	ArduinoJson@>5
+	ArduinoJson@<7
 	ESP Async WebServer
 	OneWire
 	DallasTemperature