diff --git a/platformio.ini b/platformio.ini
index c0c01016..1d576e21 100644
--- a/platformio.ini
+++ b/platformio.ini
@@ -17,12 +17,12 @@ extra_configs=
 	lib/*task*/platformio.ini
 
 [env]
-platform = espressif32
+platform = espressif32 @ 3.4.0
 framework = arduino
 lib_deps = 
 	ttlappalainen/NMEA2000-library @ 4.17.2
 	ttlappalainen/NMEA0183 @ 1.7.1
-	bblanchon/ArduinoJson@6.18.5
+	ArduinoJson @ 6.18.5
 	ottowinter/ESPAsyncWebServer-esphome@2.0.1
 	fastled/FastLED @ 3.4.0
 board_build.embed_files =