diff --git a/coinset/coins_test.go b/coinset/coins_test.go
index ec61eb2..d8ca496 100644
--- a/coinset/coins_test.go
+++ b/coinset/coins_test.go
@@ -6,6 +6,7 @@ package coinset_test
 
 import (
 	"bytes"
+	"crypto/sha256"
 	"encoding/hex"
 	"fmt"
 	"testing"
@@ -14,7 +15,6 @@ import (
 	"github.com/btcsuite/btcd/wire"
 	"github.com/btcsuite/btcutil"
 	"github.com/btcsuite/btcutil/coinset"
-	"github.com/btcsuite/fastsha256"
 )
 
 type TestCoin struct {
@@ -32,7 +32,7 @@ func (c *TestCoin) NumConfs() int64       { return c.TxNumConfs }
 func (c *TestCoin) ValueAge() int64       { return int64(c.TxValue) * c.TxNumConfs }
 
 func NewCoin(index int64, value btcutil.Amount, numConfs int64) coinset.Coin {
-	h := fastsha256.New()
+	h := sha256.New()
 	h.Write([]byte(fmt.Sprintf("%d", index)))
 	hash, _ := chainhash.NewHash(h.Sum(nil))
 	c := &TestCoin{
diff --git a/hash160.go b/hash160.go
index bc78841..0e58219 100644
--- a/hash160.go
+++ b/hash160.go
@@ -5,9 +5,9 @@
 package btcutil
 
 import (
+	"crypto/sha256"
 	"hash"
 
-	"github.com/btcsuite/fastsha256"
 	"github.com/btcsuite/golangcrypto/ripemd160"
 )
 
@@ -19,5 +19,5 @@ func calcHash(buf []byte, hasher hash.Hash) []byte {
 
 // Hash160 calculates the hash ripemd160(sha256(b)).
 func Hash160(buf []byte) []byte {
-	return calcHash(calcHash(buf, fastsha256.New()), ripemd160.New())
+	return calcHash(calcHash(buf, sha256.New()), ripemd160.New())
 }