diff --git a/platformio.ini b/platformio.ini
index d58ca0afb..75f8e1b44 100644
--- a/platformio.ini
+++ b/platformio.ini
@@ -14,7 +14,7 @@
 ; examples/platformio.ini instead.
 
 [env:esp32dev]
-platform = espressif32
+platform = espressif32 @ ^6.9.0
 board = esp32dev
 framework = arduino
 lib_ldf_mode = deep