diff --git a/CHANGES.rst b/CHANGES.rst
index 4d0657688..70e566cad 100644
--- a/CHANGES.rst
+++ b/CHANGES.rst
@@ -1,6 +1,15 @@
 Release Notes
 =============
 
+1.2.13
+------
+
+* Fix handling of pre-release option. (#424)
+  `#424 <https://github.com/pantsbuild/pex/pull/424>`_
+
+* Patch sys module using pex_path from PEX-INFO metadata (#421)
+  `#421 <https://github.com/pantsbuild/pex/pull/421>`_
+
 1.2.12
 ------
 
diff --git a/pex/version.py b/pex/version.py
index 3441d8364..d25d17443 100644
--- a/pex/version.py
+++ b/pex/version.py
@@ -1,7 +1,7 @@
 # Copyright 2015 Pants project contributors (see CONTRIBUTORS.md).
 # Licensed under the Apache License, Version 2.0 (see LICENSE).
 
-__version__ = '1.2.12'
+__version__ = '1.2.13'
 
 # NB: If we upgrade to setuptools>=34 pex's bootstrap code in `PEXBuilder` will need an update to
 # include the `packaging` package in the `.bootstrap/` code since we use