diff --git a/commit.ref b/commit.ref
index 5904857..639ac59 160000
--- a/commit.ref
+++ b/commit.ref
@@ -1 +1 @@
-Subproject commit 59048574723f6d14d147101784e41fac0762259a
+Subproject commit 639ac59f86ac4c84e55c9585dede1d463247653e