diff --git a/docs/source/conf.py b/docs/source/conf.py
index f4e9e2a89b..2a8933bcb6 100644
--- a/docs/source/conf.py
+++ b/docs/source/conf.py
@@ -83,9 +83,9 @@
 # built documents.
 #
 # The short X.Y version.
-version = u'0.11.0'
+version = u'0.12.0'
 # The full version, including alpha/beta/rc tags.
-release = u'0.11.0'
+release = u'0.12.0'
 
 # The language for content autogenerated by Sphinx. Refer to documentation
 # for a list of supported languages.
diff --git a/setup.py b/setup.py
index d382af6850..394bb4a8ec 100644
--- a/setup.py
+++ b/setup.py
@@ -104,7 +104,7 @@ def __init__(self, *args, **kwargs):
 
 setup(
     name='chainercv',
-    version='0.11.0',
+    version='0.12.0',
     packages=find_packages(),
     author='Yusuke Niitani, Toru Ogawa',
     author_email='niitani@preferred.jp, ogawa@preferred.jp',