diff --git a/coolamqp/uplink/handshake.py b/coolamqp/uplink/handshake.py
index 077ca78acbb759d71ba757fd5f12752e5f57fbbe..279f83eb7c50645954bd222757378124108648e8 100644
--- a/coolamqp/uplink/handshake.py
+++ b/coolamqp/uplink/handshake.py
@@ -22,7 +22,7 @@ CLIENT_DATA = [
         # because RabbitMQ is some kind of a fascist and does not allow
         # these fields to be of type short-string
         (b'product', (b'CoolAMQP', 'S')),
-        (b'version', (b'0.90', 'S')),
+        (b'version', (b'0.91', 'S')),
         (b'copyright', (b'Copyright (C) 2016-2017 DMS Serwis', 'S')),
         (b'information', (b'Licensed under the MIT License.\nSee https://github.com/smok-serwis/coolamqp for details', 'S')),
         (b'capabilities', ([(capa, (True, 't')) for capa in SUPPORTED_EXTENSIONS], 'F')),
diff --git a/docs/conf.py b/docs/conf.py
index 554b356efe334437c48bb3d25729a11ac5a49060..1d182d72dcccb56213ea7d16bd9528cc073fe936 100644
--- a/docs/conf.py
+++ b/docs/conf.py
@@ -57,9 +57,9 @@ author = u'DMS Serwis s.c.'
 # built documents.
 #
 # The short X.Y version.
-version = '0.90'
+version = '0.91'
 # The full version, including alpha/beta/rc tags.
-release = u'0.90'
+release = u'0.91-rc'
 
 # 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 e2a8daae22e2ed0bcbfce53918d5a8be6a7f85f7..0bfca49d80d597a0b8ceb406d69f8a6a0a92cc2f 100644
--- a/setup.py
+++ b/setup.py
@@ -4,12 +4,12 @@ from setuptools import setup
 
 
 setup(name=u'CoolAMQP',
-      version='0.90',
+      version='0.91',
       description=u'Very fast pure-Python AMQP client',
       author=u'DMS Serwis s.c.',
       author_email=u'piotrm@smok.co',
       url=u'https://github.com/smok-serwis/coolamqp',
-      download_url='https://github.com/smok-serwis/coolamqp/archive/v0.90.zip',
+      download_url='https://github.com/smok-serwis/coolamqp/archive/v0.91.zip',
       keywords=['amqp', 'rabbitmq', 'client', 'network', 'ha', 'high availability'],
       packages=[
           'coolamqp',