diff --git a/HISTORY.rst b/HISTORY.rst
index 9a2ff0e..6c3b395 100644
--- a/HISTORY.rst
+++ b/HISTORY.rst
@@ -3,7 +3,7 @@
 History
 -------
 
-v0.XX.X (XXXX-XX-XX)
+v0.13.1 (2018-09-21)
 .....................
 * fix issue where int_validator doesn't cast a ``bool`` to an ``int`` #264 by @nphyatt
 * add deep copy support for ``BaseModel.copy()`` #249, @gangefors
diff --git a/pydantic/version.py b/pydantic/version.py
index 7499e31..0736f52 100644
--- a/pydantic/version.py
+++ b/pydantic/version.py
@@ -2,4 +2,4 @@ from distutils.version import StrictVersion
 
 __all__ = ['VERSION']
 
-VERSION = StrictVersion('0.13')
+VERSION = StrictVersion('0.13.1')