diff --git a/extern/filecoin-ffi b/extern/filecoin-ffi
index 6d9e80001..6ac840062 160000
--- a/extern/filecoin-ffi
+++ b/extern/filecoin-ffi
@@ -1 +1 @@
-Subproject commit 6d9e80001bfa2d80eec4e157da46d783038d9b42
+Subproject commit 6ac840062c094b35c87a87638cd7a262f43edd49