diff --git a/Godeps/Godeps.json b/Godeps/Godeps.json
index 0f9a139..2773e88 100644
--- a/Godeps/Godeps.json
+++ b/Godeps/Godeps.json
@@ -22,10 +22,6 @@
 			"ImportPath": "github.com/edsrzf/mmap-go",
 			"Rev": "6c75090c55983bef2e129e173681b20d24871ef8"
 		},
-		{
-			"ImportPath": "github.com/siddontang/go/arena",
-			"Rev": "c2b33271306fcb7c6532efceac33ec45ee2439e0"
-		},
 		{
 			"ImportPath": "github.com/siddontang/go/bson",
 			"Rev": "c2b33271306fcb7c6532efceac33ec45ee2439e0"
diff --git a/Godeps/_workspace/src/github.com/siddontang/go/arena/arena.go b/Godeps/_workspace/src/github.com/siddontang/go/arena/arena.go
deleted file mode 100644
index 2ca98aa..0000000
--- a/Godeps/_workspace/src/github.com/siddontang/go/arena/arena.go
+++ /dev/null
@@ -1,30 +0,0 @@
-package arena
-
-type Arena struct {
-	buf []byte
-
-	offset int
-}
-
-func NewArena(size int) *Arena {
-	a := new(Arena)
-
-	a.buf = make([]byte, size, size)
-	a.offset = 0
-
-	return a
-}
-
-func (a *Arena) Make(size int) []byte {
-	if len(a.buf) < size || len(a.buf)-a.offset < size {
-		return make([]byte, size)
-	}
-
-	b := a.buf[a.offset : size+a.offset]
-	a.offset += size
-	return b
-}
-
-func (a *Arena) Reset() {
-	a.offset = 0
-}
diff --git a/Godeps/_workspace/src/github.com/siddontang/go/arena/arena_test.go b/Godeps/_workspace/src/github.com/siddontang/go/arena/arena_test.go
deleted file mode 100644
index 607b2a4..0000000
--- a/Godeps/_workspace/src/github.com/siddontang/go/arena/arena_test.go
+++ /dev/null
@@ -1,28 +0,0 @@
-package arena
-
-import (
-	"fmt"
-	"testing"
-)
-
-func TestArena(t *testing.T) {
-	a := NewArena(100)
-
-	for i := 0; i < 50; i++ {
-		a.buf[i] = 1
-	}
-
-	for i := 50; i < 100; i++ {
-		a.buf[i] = 2
-	}
-
-	b1 := a.Make(50)
-
-	b2 := a.Make(30)
-
-	b3 := a.Make(40)
-
-	fmt.Printf("%p %d\n", b1, b1[49])
-	fmt.Printf("%p %d\n", b2, b2[29])
-	fmt.Printf("%p %d\n", b3, b3[39])
-}