diff --git a/contracts/lib/tnt-core b/contracts/lib/tnt-core
index 37f34c5..c1fa9c7 160000
--- a/contracts/lib/tnt-core
+++ b/contracts/lib/tnt-core
@@ -1 +1 @@
-Subproject commit 37f34c54a063259a44547df63b82a79c852807d9
+Subproject commit c1fa9c7c3c5891aab9bd25002a434d93c54942cd