diff --git a/4dm.h b/4dm.h
index 3b339ed..2f1e150 160000
--- a/4dm.h
+++ b/4dm.h
@@ -1 +1 @@
-Subproject commit 3b339ed5633e71f480a24dccb2f99f66d62e95f7
+Subproject commit 2f1e1503576270d021ed0620a342d73220c79b82