diff --git a/guideseq/umi b/guideseq/umi
index 5644440..3fef4c9 160000
--- a/guideseq/umi
+++ b/guideseq/umi
@@ -1 +1 @@
-Subproject commit 5644440cd5d1d1d481bbc7171d2cba722468e9b4
+Subproject commit 3fef4c92becda4c2b4b6085555415f80c1dd858e