diff --git a/docs/requirements.txt b/docs/requirements.txt
index f9713f94b2..2141bc1fe2 100644
--- a/docs/requirements.txt
+++ b/docs/requirements.txt
@@ -1,4 +1,4 @@
-chainer>=2.0
+chainer>=3.2
 Cython
 matplotlib
 numpy
diff --git a/docs/source/conf.py b/docs/source/conf.py
index 981221877d..a6ebefa012 100644
--- a/docs/source/conf.py
+++ b/docs/source/conf.py
@@ -71,9 +71,9 @@
 # built documents.
 #
 # The short X.Y version.
-version = u'0.7.0'
+version = u'0.8.0'
 # The full version, including alpha/beta/rc tags.
-release = u'0.7.0'
+release = u'0.8.0'
 
 # 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 9a0ef04c61..d045be2139 100644
--- a/setup.py
+++ b/setup.py
@@ -22,7 +22,7 @@
 
 setup_requires = ['numpy']
 install_requires = [
-    'chainer>=2.0',
+    'chainer>=3.2',
     'Pillow'
 ]
 
@@ -78,7 +78,7 @@ def build_extensions(self):
 
 setup(
     name='chainercv',
-    version='0.7.0',
+    version='0.8.0',
     packages=find_packages(),
     author='Yusuke Niitani',
     author_email='yuyuniitani@gmail.com',