diff --git a/extern/filecoin-ffi b/extern/filecoin-ffi
index 0c6d69861..4ff4fec93 160000
--- a/extern/filecoin-ffi
+++ b/extern/filecoin-ffi
@@ -1 +1 @@
-Subproject commit 0c6d698610a98c9efcefc58d5277ee8813d80033
+Subproject commit 4ff4fec93f1b40e1351af978b8df5de1156f389d