diff --git a/rtclib b/rtclib
index e21361f..ac7e8ea 160000
--- a/rtclib
+++ b/rtclib
@@ -1 +1 @@
-Subproject commit e21361f1b6a27c8674d2efd463a98a2f596c4e9f
+Subproject commit ac7e8ea1c4517caff1ea59deaafc84c814fecb6e