diff --git a/chain/vm/spec_shim.go b/chain/vm/spec_shim.go
index 1cadde826..c5f6f1b06 100644
--- a/chain/vm/spec_shim.go
+++ b/chain/vm/spec_shim.go
@@ -257,6 +257,7 @@ func (rs *runtimeShim) Send(to address.Address, method abi.MethodNum, m vmr.CBOR
 		if err.IsFatal() {
 			panic(err)
 		}
+		log.Warnf("vmctx send failed: to: %s, method: %d: ret: %d, err: %s", to, method, ret, err)
 		return nil, exitcode.ExitCode(err.RetCode())
 	}
 	return &dumbWrapperType{ret}, 0
diff --git a/go.mod b/go.mod
index 0062e71f2..98729ecc6 100644
--- a/go.mod
+++ b/go.mod
@@ -23,7 +23,7 @@ require (
 	github.com/filecoin-project/go-paramfetch v0.0.2-0.20200218225740-47c639bab663
 	github.com/filecoin-project/go-sectorbuilder v0.0.2-0.20200228181617-f00e2c4cc050
 	github.com/filecoin-project/go-statestore v0.1.0
-	github.com/filecoin-project/specs-actors v0.0.0-20200228183246-c3624e024ec6
+	github.com/filecoin-project/specs-actors v0.0.0-20200228215954-2c5be7cfad99
 	github.com/gbrlsnchs/jwt/v3 v3.0.0-beta.1
 	github.com/go-ole/go-ole v1.2.4 // indirect
 	github.com/google/uuid v1.1.1
@@ -114,3 +114,5 @@ require (
 replace github.com/golangci/golangci-lint => github.com/golangci/golangci-lint v1.18.0
 
 replace github.com/filecoin-project/filecoin-ffi => ./extern/filecoin-ffi
+
+replace github.com/filecoin-project/specs-actors => ../specs-actors
diff --git a/storage/sealing/sealing.go b/storage/sealing/sealing.go
index 8ad74b841..cd2f6ff5f 100644
--- a/storage/sealing/sealing.go
+++ b/storage/sealing/sealing.go
@@ -121,7 +121,7 @@ func (m *Sealing) SealPiece(ctx context.Context, size abi.UnpaddedPieceSize, r i
 		return xerrors.Errorf("adding piece to sector: %w", err)
 	}
 
-	rt, _, err := api.ProofTypeFromSectorSize(m.sb.SectorSize())
+	_, rt, err := api.ProofTypeFromSectorSize(m.sb.SectorSize())
 	if err != nil {
 		return xerrors.Errorf("bad sector size: %w", err)
 	}