diff --git a/sigchain b/sigchain
index fad173c1..87784ac8 160000
--- a/sigchain
+++ b/sigchain
@@ -1 +1 @@
-Subproject commit fad173c1c9acc058090009a9662032dab5042e75
+Subproject commit 87784ac8a5478cc08da2cf4a6f9d2a8afcf04a23