diff --git a/ChangeLog b/ChangeLog
index dffd05d..068a5f2 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,7 @@
+2011-08-14  Jean-Paul Calderone  <exarkun@twistedmatrix.com>
+
+	* Release 0.13
+
 2011-06-12  Jean-Paul Calderone  <exarkun@twistedmatrix.com>
 
 	* OpenSSL/crypto/pkey.c: Add the PKey.check method, mostly
diff --git a/OpenSSL/version.py b/OpenSSL/version.py
index b7255e9..2f1bed7 100644
--- a/OpenSSL/version.py
+++ b/OpenSSL/version.py
@@ -6,4 +6,4 @@
 pyOpenSSL - A simple wrapper around the OpenSSL library
 """
 
-__version__ = '0.12'
+__version__ = '0.13a1'
diff --git a/setup.py b/setup.py
index 73c88a0..a278927 100755
--- a/setup.py
+++ b/setup.py
@@ -15,7 +15,7 @@
 from distutils.command.build_ext import build_ext
 
 # XXX Deduplicate this
-__version__ = '0.12'
+__version__ = '0.13a1'
 
 crypto_src = ['OpenSSL/crypto/crypto.c', 'OpenSSL/crypto/x509.c',
               'OpenSSL/crypto/x509name.c', 'OpenSSL/crypto/pkey.c',