diff --git a/setup.py b/setup.py
index b44b9a3..e3626dc 100644
--- a/setup.py
+++ b/setup.py
@@ -67,7 +67,7 @@ def reduce_requirements(key):
         'onnx_chainer.functions',
         'onnx_chainer.testing',
     ],
-    version='1.5.1a2',
+    version='1.6.0',
     description='Convert a Chainer model into ONNX',
     long_description=open('README.md').read(),
     long_description_content_type='text/markdown',