diff --git a/nulllib b/nulllib
index a8155f5..b891cf1 160000
--- a/nulllib
+++ b/nulllib
@@ -1 +1 @@
-Subproject commit a8155f594112cfbb96ae7eb1af330f303f679824
+Subproject commit b891cf1efce1f68b1be09063e4cb83af5ac8a180