diff --git a/firmware/cyd/VERSION.txt b/firmware/cyd/VERSION.txt
index 966122f..b90d15f 100644
--- a/firmware/cyd/VERSION.txt
+++ b/firmware/cyd/VERSION.txt
@@ -1,5 +1,5 @@
 name: CYD Whistle Sound Sensor (cyd)
-git: unknown
+git: b2052a7
 date: 2026-10-23
 board: ESP32-2432S028R (ILI9341)
 features: SoftSPI touch, LVGL, whistle/sound digital H/L on GPIO22