diff --git a/error.go b/error.go
index 7344202..cabbb39 100644
--- a/error.go
+++ b/error.go
@@ -1,5 +1,7 @@
 package aliacm
 
+import "context"
+
 // Error ACM错误
 type Error string
 
@@ -14,7 +16,9 @@ const (
 
 // ShouldIgnore 忽略一些不想关心的错误
 func ShouldIgnore(err error) bool {
-	if err == serviceUnavailableErr || err == internalServerErr {
+	if err == serviceUnavailableErr ||
+		err == internalServerErr ||
+		err  == context.Canceled {
 		return true
 	}
 	return false
diff --git a/time.go b/time.go
index 5ce637d..4fab9d0 100644
--- a/time.go
+++ b/time.go
@@ -5,7 +5,7 @@ import (
 )
 
 const (
-	apiTimeout = 3 * time.Second
+	apiTimeout = 5 * time.Second
 )
 
 func timeInMilli() int64 {