diff --git a/platformio.ini b/platformio.ini
index 67c3eb3..023ef2b 100755
--- a/platformio.ini
+++ b/platformio.ini
@@ -11,7 +11,7 @@ lib_deps =
     Hash
     TaskScheduler
     SPIFFS
-    ArduinoJson
+    ArduinoJson@5.13.4
     https://gitlab.com/wirelos/sprocket-lib.git#develop
     https://gitlab.com/wirelos/sprocket-network-wifi.git