diff --git a/docs/storage/driver/s3-aws/s3.go b/docs/storage/driver/s3-aws/s3.go
index 4122a4afb..565f264d2 100644
--- a/docs/storage/driver/s3-aws/s3.go
+++ b/docs/storage/driver/s3-aws/s3.go
@@ -81,6 +81,7 @@ func init() {
 		"ap-northeast-1",
 		"ap-northeast-2",
 		"sa-east-1",
+		"cn-north-1",
 	} {
 		validRegions[region] = struct{}{}
 	}