diff --git a/extern/filecoin-ffi b/extern/filecoin-ffi
index 3d5f2311117..b4b700f75c1 160000
--- a/extern/filecoin-ffi
+++ b/extern/filecoin-ffi
@@ -1 +1 @@
-Subproject commit 3d5f23111173a8f8449b2aefd8fc7c42acc01362
+Subproject commit b4b700f75c1e0a8e4873bc406c8aef09017cba63