diff --git a/home/pi/wittypi4 b/home/pi/wittypi4
index 6724e97..28788ff 160000
--- a/home/pi/wittypi4
+++ b/home/pi/wittypi4
@@ -1 +1 @@
-Subproject commit 6724e9742f77966ce1d9d6f02703169b2f8f53d7
+Subproject commit 28788ff1c7993649fcb65e67b467d9ea8e0042b2