diff --git a/Godeps/Godeps.json b/Godeps/Godeps.json
index a01e989c20..8118b4509c 100644
--- a/Godeps/Godeps.json
+++ b/Godeps/Godeps.json
@@ -22,8 +22,8 @@
 		},
 		{
 			"ImportPath": "github.com/ethereum/ethash",
-			"Comment": "v17-63-gbca024b",
-			"Rev": "bca024b0b30d83ec6798a5d4fa8c5fc6f937009a"
+			"Comment": "v17-64-ga323708",
+			"Rev": "a323708b8c4d253b8567bf6c72727d1aec302225"
 		},
 		{
 			"ImportPath": "github.com/ethereum/serpent-go",
diff --git a/Godeps/_workspace/src/github.com/ethereum/ethash/ethash.go b/Godeps/_workspace/src/github.com/ethereum/ethash/ethash.go
index e50a3a8349..bf184020aa 100644
--- a/Godeps/_workspace/src/github.com/ethereum/ethash/ethash.go
+++ b/Godeps/_workspace/src/github.com/ethereum/ethash/ethash.go
@@ -11,7 +11,6 @@ import "C"
 import (
 	"bytes"
 	"encoding/binary"
-	"fmt"
 	"io/ioutil"
 	"log"
 	"math/big"
@@ -293,7 +292,6 @@ func (pow *Ethash) Verify(block pow.Block) bool {
 }
 
 func (pow *Ethash) verify(hash []byte, mixDigest []byte, difficulty *big.Int, blockNum uint64, nonce uint64) bool {
-	fmt.Printf("%x\n%d\n%x\n%x\n", hash, nonce, mixDigest, difficulty.Bytes())
 	// First check: make sure header, mixDigest, nonce are correct without hitting the DAG
 	// This is to prevent DOS attacks
 	chash := (*C.uint8_t)(unsafe.Pointer(&hash[0]))