diff --git a/platformio.ini b/platformio.ini
index 4e3a0d185..3e0244422 100644
--- a/platformio.ini
+++ b/platformio.ini
@@ -460,7 +460,7 @@ monitor_speed = 250000
 # Shield - https://github.com/jmz52/Hardware
 #
 [env:STM32F407VE_black]
-platform      = ststm32@5.6.0
+platform      = ststm32@5.4.3
 framework     = arduino
 board         = blackSTM32F407VET6
 extra_scripts = pre:buildroot/share/PlatformIO/scripts/black_stm32f407vet6.py