diff --git a/platformio.ini b/platformio.ini
index 637e06af..26db1c51 100644
--- a/platformio.ini
+++ b/platformio.ini
@@ -823,7 +823,7 @@ build_flags_S =
   ; -D WLED_ENABLE_DMX
 
 lib_deps_S =
-  https://github.com/kosme/arduinoFFT#develop @ 1.9.2 ; used for USERMOD_AUDIOREACTIVE
+  https://github.com/kosme/arduinoFFT#develop @ 1.9.2+sha.e5e4c74 ; used for USERMOD_AUDIOREACTIVE - using "known working" hash
 
 build_flags_M = 
   -D WLED_MAX_USERMODS=25 ; default only 4-6, also for _XL configs takes 25 pointers in memory