diff --git a/CHANGES.md b/CHANGES.md
index d8ccde54f..9c6d8a052 100644
--- a/CHANGES.md
+++ b/CHANGES.md
@@ -1,5 +1,11 @@
 # Release Notes
 
+## 2.1.150
+
+This release brings support for `--pip-version 23.3.1`.
+
+* Add support for Pip 23.3.1. (#2276)
+
 ## 2.1.149
 
 Fix `--style universal` lock handing of `none` ABI wheels with a
diff --git a/pex/version.py b/pex/version.py
index 70044c887..e85c65794 100644
--- a/pex/version.py
+++ b/pex/version.py
@@ -1,4 +1,4 @@
 # Copyright 2015 Pants project contributors (see CONTRIBUTORS.md).
 # Licensed under the Apache License, Version 2.0 (see LICENSE).
 
-__version__ = "2.1.149"
+__version__ = "2.1.150"