diff --git a/platformio.ini b/platformio.ini
index c7edb20..53c7577 100644
--- a/platformio.ini
+++ b/platformio.ini
@@ -11,7 +11,7 @@
 src_dir = main
 
 [env:esp32dev]
-platform = espressif32
+platform = espressif32 @ 3.5.0
 board = esp32dev
 framework = espidf
 monitor_speed = 115200