diff --git a/discovery/http.go b/discovery/http.go
index b6ed644b..7f30e668 100644
--- a/discovery/http.go
+++ b/discovery/http.go
@@ -28,7 +28,7 @@ import (
 type InsecureOption int
 
 const (
-	defaultDialTimeout = 5 * time.Second
+	defaultDialTimeout = 20 * time.Second
 )
 
 const (