diff --git a/CHANGES.rst b/CHANGES.rst
index 6225b749..d71eac97 100644
--- a/CHANGES.rst
+++ b/CHANGES.rst
@@ -2,6 +2,14 @@
 CHANGELOG
 =========
 
+0.9.37 (2023-07-03)
+-------------------
+
+* Avoid deprecated product key field getter.
+
+* Allow "arbitrary" PO attachment to purchase batch.
+
+
 0.9.36 (2023-06-20)
 -------------------
 
diff --git a/tailbone/_version.py b/tailbone/_version.py
index d43dbe86..d57f5f68 100644
--- a/tailbone/_version.py
+++ b/tailbone/_version.py
@@ -1,3 +1,3 @@
 # -*- coding: utf-8; -*-
 
-__version__ = '0.9.36'
+__version__ = '0.9.37'