diff --git a/nulllib b/nulllib
index 8a1d772..72f2023 160000
--- a/nulllib
+++ b/nulllib
@@ -1 +1 @@
-Subproject commit 8a1d772bb48d6c2b0fdecea59ae102615b489992
+Subproject commit 72f20234f07abc22e5b00de45302caa03e946088