diff --git a/runtime.go b/runtime.go
index ab514c40d7..1ee7aa26f9 100644
--- a/runtime.go
+++ b/runtime.go
@@ -12,6 +12,7 @@ import (
 	"path"
 	"sort"
 	"strings"
+	"time"
 )
 
 var defaultDns = []string{"8.8.8.8", "8.8.4.4"}