diff --git a/client/plasma_cash/transaction.go b/client/plasma_cash/transaction.go
index 4ba90c03..21be7629 100644
--- a/client/plasma_cash/transaction.go
+++ b/client/plasma_cash/transaction.go
@@ -9,9 +9,9 @@ import (
 	"strconv"
 
 	"github.com/ethereum/go-ethereum/common"
-	"github.com/ethereum/go-ethereum/crypto/sha3"
 	"github.com/ethereum/go-ethereum/rlp"
 	"github.com/loomnetwork/go-loom/common/evmcompat"
+	"golang.org/x/crypto/sha3"
 )
 
 type LoomTx struct {
@@ -93,7 +93,7 @@ func (l *LoomTx) rlpEncodeWithSha3() ([]byte, error) {
 	if err != nil {
 		return []byte{}, err
 	}
-	d := sha3.NewKeccak256()
+	d := sha3.NewLegacyKeccak256()
 	d.Write(hash)
 	return d.Sum(nil), nil
 }
diff --git a/common/evmcompat/helpers.go b/common/evmcompat/helpers.go
index c84674be..6198f302 100644
--- a/common/evmcompat/helpers.go
+++ b/common/evmcompat/helpers.go
@@ -15,8 +15,8 @@ import (
 
 	"github.com/ethereum/go-ethereum/common"
 	"github.com/ethereum/go-ethereum/crypto"
-	"github.com/ethereum/go-ethereum/crypto/sha3"
 	ssha "github.com/miguelmota/go-solidity-sha3"
+	"golang.org/x/crypto/sha3"
 )
 
 type SignatureType uint8
@@ -124,7 +124,7 @@ func SoliditySHA3(pairs []*Pair) ([]byte, error) {
 		return nil, err
 	}
 
-	d := sha3.NewKeccak256()
+	d := sha3.NewLegacyKeccak256()
 	d.Write(data)
 	return d.Sum(nil), nil
 }