diff --git a/vendor/github.com/sirupsen/logrus/terminal_check_notappengine.go b/vendor/github.com/sirupsen/logrus/terminal_check_notappengine.go
index cf309d6..3293fb3 100644
--- a/vendor/github.com/sirupsen/logrus/terminal_check_notappengine.go
+++ b/vendor/github.com/sirupsen/logrus/terminal_check_notappengine.go
@@ -1,18 +1,16 @@
-// +build !appengine,!js,!windows
+// +build !appengine,!js,!windows,!nacl,!plan9
 
 package logrus
 
 import (
 	"io"
 	"os"
-
-	"golang.org/x/crypto/ssh/terminal"
 )
 
 func checkIfTerminal(w io.Writer) bool {
 	switch v := w.(type) {
 	case *os.File:
-		return terminal.IsTerminal(int(v.Fd()))
+		return isTerminal(int(v.Fd()))
 	default:
 		return false
 	}