diff --git a/ed25519_encode_test.go b/ed25519_encode_test.go
index 5d96d9e..5e34581 100644
--- a/ed25519_encode_test.go
+++ b/ed25519_encode_test.go
@@ -6,7 +6,7 @@ package crypto
 
 import (
 	"fmt"
-	"github.com/proximax-storage/nem2-sdk-go/utils"
+	"github.com/proximax-storage/go-xpx-utils"
 	"github.com/stretchr/testify/assert"
 	"math/big"
 	"runtime"
diff --git a/go.mod b/go.mod
index ea1dffa..3bf8846 100644
--- a/go.mod
+++ b/go.mod
@@ -4,7 +4,6 @@ go 1.12
 
 require (
 	github.com/pkg/errors v0.8.1
-	github.com/proximax-storage/nem2-sdk-go v0.0.0-20190128134401-f3b97d8c1f63
 	github.com/stretchr/testify v1.3.0
 	golang.org/x/crypto v0.0.0-20190513172903-22d7a77e9e5f
 )
diff --git a/go.sum b/go.sum
index fddac3d..7d7a8d5 100644
--- a/go.sum
+++ b/go.sum
@@ -4,8 +4,6 @@ github.com/pkg/errors v0.8.1 h1:iURUrRGxPUNPdy5/HRSm+Yj6okJ6UtLINN0Q9M4+h3I=
 github.com/pkg/errors v0.8.1/go.mod h1:bwawxfHBFNV+L2hUp1rHADufV3IMtnDRdf1r5NINEl0=
 github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
 github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
-github.com/proximax-storage/nem2-sdk-go v0.0.0-20190128134401-f3b97d8c1f63 h1:y0qyv3HK1N69ebIBVq2Reg94bgTRRsalKQ2jtFm4X10=
-github.com/proximax-storage/nem2-sdk-go v0.0.0-20190128134401-f3b97d8c1f63/go.mod h1:bTUWZWtoRHhTTqatPWwFCKNeAFDzA2jbA1kLidM0/Is=
 github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
 github.com/stretchr/testify v1.3.0 h1:TivCn/peBQ7UY8ooIcPgZFpTNSz0Q2U6UrFlUfqbe0Q=
 github.com/stretchr/testify v1.3.0/go.mod h1:M5WIy9Dh21IEIfnGCwXGc5bZfKNJtfHm1UVUgZn+9EI=