diff --git a/dashboard/builder/env.go b/dashboard/builder/env.go
index 5d0c70e9..0d1d0dfe 100644
--- a/dashboard/builder/env.go
+++ b/dashboard/builder/env.go
@@ -7,7 +7,6 @@ package main
 import (
 	"bytes"
 	"fmt"
-	"io"
 	"io/ioutil"
 	"os"
 	"path/filepath"