diff --git a/chain/vm/fvm.go b/chain/vm/fvm.go
index 3a8eb7bb8..523121587 100644
--- a/chain/vm/fvm.go
+++ b/chain/vm/fvm.go
@@ -310,6 +310,7 @@ func defaultFVMOpts(ctx context.Context, opts *VMOpts) (*ffi.FVMOpts, error) {
 		},
 		Epoch:          opts.Epoch,
 		Timestamp:      opts.Timestamp,
+		ChainID:        build.Eip155ChainId,
 		BaseFee:        opts.BaseFee,
 		BaseCircSupply: circToReport,
 		NetworkVersion: opts.NetworkVersion,
diff --git a/extern/filecoin-ffi b/extern/filecoin-ffi
index 02ebb2d61..21217875e 160000
--- a/extern/filecoin-ffi
+++ b/extern/filecoin-ffi
@@ -1 +1 @@
-Subproject commit 02ebb2d6169131cfe489e1063e896f14982c463d
+Subproject commit 21217875e44f50c3851615de3ced674a6fdc386c