diff --git a/_version.ts b/_version.ts
index bd8e9b5..1be43de 100644
--- a/_version.ts
+++ b/_version.ts
@@ -1,2 +1,2 @@
 // Copyright 2019-2020 Yusuke Sakurai. All rights reserved. MIT license.
-export const Version = "v1.3.0";
+export const Version = "v1.3.1";