diff --git a/ch32v-insert-coin/ext/adpcm-pwm-dac b/ch32v-insert-coin/ext/adpcm-pwm-dac
index e6114d2..714715b 160000
--- a/ch32v-insert-coin/ext/adpcm-pwm-dac
+++ b/ch32v-insert-coin/ext/adpcm-pwm-dac
@@ -1 +1 @@
-Subproject commit e6114d2c521ef3a769bd2a52411e3a938b566908
+Subproject commit 714715b4aae512d1384b7387e3d2f695ea9b348e