diff --git a/protocol/protocol.go b/protocol/protocol.go
index f8fffa2fe..501574b6b 100644
--- a/protocol/protocol.go
+++ b/protocol/protocol.go
@@ -90,7 +90,7 @@ type asyncResult struct {
 }
 
 const (
-	pingTimeout  = 2 * time.Minute
+	pingTimeout  = 4 * time.Minute
 	pingIdleTime = 5 * time.Minute
 )