diff --git a/libraries/libfc/libraries/bls12-381 b/libraries/libfc/libraries/bls12-381
index b179f9b272..397cfe1bb3 160000
--- a/libraries/libfc/libraries/bls12-381
+++ b/libraries/libfc/libraries/bls12-381
@@ -1 +1 @@
-Subproject commit b179f9b2724cc7faafb7d9ec920c2009577e842e
+Subproject commit 397cfe1bb3b8d109d26944ee083a79579c7b34a0