diff --git a/contracts/lib/core b/contracts/lib/core
index f78e6d756..1e391f3cf 160000
--- a/contracts/lib/core
+++ b/contracts/lib/core
@@ -1 +1 @@
-Subproject commit f78e6d7560c91f036047dc95c6e530e1110f93b8
+Subproject commit 1e391f3cfce3feb74e542e70711d670cf5c6415e