diff --git a/doc/news/OSW-2759.bugfix.rst b/doc/news/OSW-2759.bugfix.rst
deleted file mode 100644
index dc056ff82..000000000
--- a/doc/news/OSW-2759.bugfix.rst
+++ /dev/null
@@ -1 +0,0 @@
-In ``prepare_for/vent.py``, added missing env line.
diff --git a/doc/version_history.rst b/doc/version_history.rst
index 70b678165..ed3280e92 100644
--- a/doc/version_history.rst
+++ b/doc/version_history.rst
@@ -8,6 +8,15 @@ Version History
 
 .. towncrier release notes start
 
+v2.3.1 (2026-10-16)
+===================
+
+Bug Fixes
+---------
+
+- In ``prepare_for/vent.py``, added missing env line. (`OSW-2759 <https://rubinobs.atlassian.net/browse/OSW-2759>`_)
+
+
 v2.3.0 (2026-09-30)
 ===================