diff --git a/platformio.ini b/platformio.ini
index 44d4391..82a8a73 100644
--- a/platformio.ini
+++ b/platformio.ini
@@ -9,7 +9,7 @@
 ; https://docs.platformio.org/page/projectconf.html
 
 [env:esp32doit-devkit-v1]
-platform = espressif32
+platform = espressif32@1.6.0
 board = esp32doit-devkit-v1
 framework = arduino
 lib_deps =