diff --git a/docs/Config_Changes.md b/docs/Config_Changes.md
index 8f8ec37a36dd..063af8ac390f 100644
--- a/docs/Config_Changes.md
+++ b/docs/Config_Changes.md
@@ -8,6 +8,10 @@ All dates in this document are approximate.
 
 ## Changes
 
+20230810: The flash-sdcard.sh script now supports both variants of the
+Bigtreetech SKR-3, STM32H743 and STM32H723. For this, the original tag
+of btt-skr-3 now has changed to be either btt-skr-3-h743 or btt-skr-3-h723.
+
 20230729: The exported status for `dual_carriage` is changed. Instead of
 exporting `mode` and `active_carriage`, the individual modes for each
 carriage are exported as `printer.dual_carriage.carriage_0` and
diff --git a/scripts/spi_flash/board_defs.py b/scripts/spi_flash/board_defs.py
index fe2e8c06364a..7dc44afc99a1 100644
--- a/scripts/spi_flash/board_defs.py
+++ b/scripts/spi_flash/board_defs.py
@@ -87,13 +87,20 @@
         'spi_bus': 'spi3a',
         'cs_pin': 'PA15'
     },
-    'btt-skr-3': {
+    'btt-skr-3-h743': {
         'mcu': 'stm32h743xx',
         'spi_bus': 'swspi',
         'spi_pins': "PC8,PD2,PC12",
         'cs_pin': 'PC11',
         'skip_verify': True
     },
+    'btt-skr-3-h723': {
+        'mcu': 'stm32h723xx',
+        'spi_bus': 'swspi',
+        'spi_pins': "PC8,PD2,PC12",
+        'cs_pin': 'PC11',
+        'skip_verify': True
+    },
     'creality-v4.2.2': {
         'mcu': "stm32f103xe",
         'spi_bus': "swspi",