diff --git a/cmd/helm/upgrade.go b/cmd/helm/upgrade.go
index 1852abeb9..bbd6a23d0 100644
--- a/cmd/helm/upgrade.go
+++ b/cmd/helm/upgrade.go
@@ -19,6 +19,7 @@ package main
 import (
 	"fmt"
 	"io"
+	"os"
 	"strings"
 
 	"github.com/spf13/cobra"