diff --git a/setup.py b/setup.py
index f4dc02b..16d56a7 100644
--- a/setup.py
+++ b/setup.py
@@ -7,7 +7,7 @@
         'onnx_chainer.functions',
         'onnx_chainer.testing',
     ],
-    version='1.3.0',
+    version='1.3.1',
     description='Convert a Chainer model into ONNX',
     long_description=open('README.md').read(),
     long_description_content_type='text/markdown',