diff --git a/.DS_Store b/.DS_Store
index b834d4c..4a00c5d 100644
Binary files a/.DS_Store and b/.DS_Store differ
diff --git a/components/zh_pcf8574 b/components/zh_pcf8574
index c9365e4..157aa7f 160000
--- a/components/zh_pcf8574
+++ b/components/zh_pcf8574
@@ -1 +1 @@
-Subproject commit c9365e40ba207fbb472850be74c38cb14c2dff94
+Subproject commit 157aa7f49b2f7f7879ebb427b858aea34a67050d