diff --git a/Gopkg.lock b/Gopkg.lock
deleted file mode 100644
index 32350dc..0000000
--- a/Gopkg.lock
+++ /dev/null
@@ -1,15 +0,0 @@
-# This file is autogenerated, do not edit; changes may be undone by the next 'dep ensure'.
-
-
-[[projects]]
-  branch = "master"
-  name = "github.com/cxmcc/tiger"
-  packages = ["."]
-  revision = "bde35e2713d7f674987c2ecb21a6b0fc33749516"
-
-[solve-meta]
-  analyzer-name = "dep"
-  analyzer-version = 1
-  inputs-digest = "c88ee670a5600b482019325b6d6633bb6b5fe789596dc29ef809aa7bb013927b"
-  solver-name = "gps-cdcl"
-  solver-version = 1
diff --git a/Gopkg.toml b/Gopkg.toml
deleted file mode 100644
index a16c0fb..0000000
--- a/Gopkg.toml
+++ /dev/null
@@ -1,26 +0,0 @@
-
-# Gopkg.toml example
-#
-# Refer to https://github.com/golang/dep/blob/master/docs/Gopkg.toml.md
-# for detailed Gopkg.toml documentation.
-#
-# required = ["github.com/user/thing/cmd/thing"]
-# ignored = ["github.com/user/project/pkgX", "bitbucket.org/user/project/pkgA/pkgY"]
-#
-# [[constraint]]
-#   name = "github.com/user/project"
-#   version = "1.0.0"
-#
-# [[constraint]]
-#   name = "github.com/user/project2"
-#   branch = "dev"
-#   source = "github.com/myfork/project2"
-#
-# [[override]]
-#  name = "github.com/x/y"
-#  version = "2.4.0"
-
-
-[[constraint]]
-  branch = "master"
-  name = "github.com/cxmcc/tiger"
diff --git a/go.mod b/go.mod
new file mode 100644
index 0000000..e963379
--- /dev/null
+++ b/go.mod
@@ -0,0 +1,3 @@
+module code.ivysaur.me/libnmdc
+
+require github.com/cxmcc/tiger v0.0.0-20170524142333-bde35e2713d7
diff --git a/go.sum b/go.sum
new file mode 100644
index 0000000..5b73703
--- /dev/null
+++ b/go.sum
@@ -0,0 +1,2 @@
+github.com/cxmcc/tiger v0.0.0-20170524142333-bde35e2713d7 h1:jBEtq1t2gpn2kEzvRlCUxvvrxl5aSWkXNPwe/hwvSNQ=
+github.com/cxmcc/tiger v0.0.0-20170524142333-bde35e2713d7/go.mod h1:ruCYvt9rtYymAr4rNmfYJrl1dz8HSXUFP7cufqKOsDI=
diff --git a/vendor/github.com/cxmcc/tiger/tiger_test.go b/vendor/github.com/cxmcc/tiger/tiger_test.go
deleted file mode 100644
index a7068aa..0000000
--- a/vendor/github.com/cxmcc/tiger/tiger_test.go
+++ /dev/null
@@ -1,144 +0,0 @@
-package tiger
-
-import (
-	"fmt"
-	"io"
-	"strings"
-	"testing"
-	"unsafe"
-)
-
-type Test struct {
-	out string
-	in  string
-}
-
-var golden = []Test{
-	{"3293ac630c13f0245f92bbb1766e16167a4e58492dde73f3", ""},
-	{"77befbef2e7ef8ab2ec8f93bf587a7fc613e247f5f247809", "a"},
-	{"2aab1484e8c158f2bfb8c5ff41b57a525129131c957b5f93", "abc"},
-	{"d981f8cb78201a950dcf3048751e441c517fca1aa55a29f6", "message digest"},
-	{"1714a472eee57d30040412bfcc55032a0b11602ff37beee9", "abcdefghijklmnopqrstuvwxyz"},
-	{"0f7bf9a19b9c58f2b7610df7e84f0ac3a71c631e7b53f78e", "abcdbcdecdefdefgefghfghighijhijkijkljklmklmnlmnomnopnopq"},
-	{"8dcea680a17583ee502ba38a3c368651890ffbccdc49a8cc", "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789"},
-	{"1c14795529fd9f207a958f84c52f11e887fa0cabdfd91bfd", "12345678901234567890123456789012345678901234567890123456789012345678901234567890"},
-	{"cdf0990c5c6b6b0bddd63a75ed20e2d448bf44e15fde0df4", strings.Repeat("A", 1024)},
-	{"89292aee0f82842abc080c57b3aadd9ca84d66bf0cae77aa", strings.Repeat("A", 1025)},
-}
-
-func TestGolden(t *testing.T) {
-	for i := 0; i < len(golden); i++ {
-		g := golden[i]
-		c := New()
-		buf := make([]byte, len(g.in)+4)
-		for j := 0; j < 7; j++ {
-			if j < 2 {
-				io.WriteString(c, g.in)
-			} else if j == 2 {
-				io.WriteString(c, g.in[0:len(g.in)/2])
-				c.Sum(nil)
-				io.WriteString(c, g.in[len(g.in)/2:])
-			} else if j > 2 {
-				// test unaligned write
-				buf = buf[1:]
-				copy(buf, g.in)
-				c.Write(buf[:len(g.in)])
-			}
-			s := fmt.Sprintf("%x", c.Sum(nil))
-			if s != g.out {
-				t.Fatalf("tiger[%d](%s) = %s want %s", j, g.in, s, g.out)
-			}
-			c.Reset()
-		}
-	}
-}
-
-type WriteTest struct {
-	out int
-	in  string
-}
-
-var writeTestVectors = []WriteTest{
-	{0, ""},
-	{1, "A"},
-	{2, "AA"},
-	{10, strings.Repeat("A", 10)},
-	{1024, strings.Repeat("A", 1024)},
-	{1025, strings.Repeat("A", 1025)},
-	{0, ""},
-}
-
-func TestWriteReturnsCorrectSize(t *testing.T) {
-	c := New()
-	for i := 0; i < len(writeTestVectors); i++ {
-		v := writeTestVectors[i]
-		b := []byte(v.in)
-		length, err := c.Write(b[:len(v.in)])
-		if length != v.out {
-			t.Fatalf("Write() = %d want %d", length, v.out)
-		}
-		if err != nil {
-			t.Fatalf("Write(%s) failed.", v.in)
-		}
-	}
-}
-
-func ExampleNew() {
-	h := New()
-	io.WriteString(h, "It's the eye of the tiger, it's the thrill of the fight")
-	io.WriteString(h, "Rising up to the challenge of our rival!")
-	fmt.Printf("%x", h.Sum(nil))
-	// Output: a7bbad36cc17918e399ae8ee893e4595e4d24e1639fe822c
-}
-
-func ExampleNew2() {
-	h := New2()
-	io.WriteString(h, "It's the eye of the tiger, it's the thrill of the fight")
-	io.WriteString(h, "Rising up to the challenge of our rival!")
-	fmt.Printf("%x", h.Sum(nil))
-	// Output: c86695c2a639506682de2c12c2d23b61a12db78ea1ee1001
-}
-
-var bench = New()
-var buf = make([]byte, 8192+1)
-var sum = make([]byte, bench.Size())
-
-func benchmarkSize(b *testing.B, size int, unaligned bool) {
-	b.SetBytes(int64(size))
-	buf := buf
-	if unaligned {
-		if uintptr(unsafe.Pointer(&buf[0]))&(unsafe.Alignof(uint32(0))-1) == 0 {
-			buf = buf[1:]
-		}
-	}
-	b.ResetTimer()
-	for i := 0; i < b.N; i++ {
-		bench.Reset()
-		bench.Write(buf[:size])
-		bench.Sum(sum[:0])
-	}
-}
-
-func BenchmarkHash8Bytes(b *testing.B) {
-	benchmarkSize(b, 8, false)
-}
-
-func BenchmarkHash1K(b *testing.B) {
-	benchmarkSize(b, 1024, false)
-}
-
-func BenchmarkHash8K(b *testing.B) {
-	benchmarkSize(b, 8192, false)
-}
-
-func BenchmarkHash8BytesUnaligned(b *testing.B) {
-	benchmarkSize(b, 8, true)
-}
-
-func BenchmarkHash1KUnaligned(b *testing.B) {
-	benchmarkSize(b, 1024, true)
-}
-
-func BenchmarkHash8KUnaligned(b *testing.B) {
-	benchmarkSize(b, 8192, true)
-}
diff --git a/vendor/modules.txt b/vendor/modules.txt
new file mode 100644
index 0000000..2dfedad
--- /dev/null
+++ b/vendor/modules.txt
@@ -0,0 +1,2 @@
+# github.com/cxmcc/tiger v0.0.0-20170524142333-bde35e2713d7
+github.com/cxmcc/tiger