diff --git a/contracts/lib/tnt-core b/contracts/lib/tnt-core
index b51a732..7a187f8 160000
--- a/contracts/lib/tnt-core
+++ b/contracts/lib/tnt-core
@@ -1 +1 @@
-Subproject commit b51a732e80e9f8fb9245b4e58968f2bd54a37b66
+Subproject commit 7a187f8ae4abdadf5bbd72331ec3342c93acef75