diff --git a/CHANGES.rst b/CHANGES.rst
index bba0fb5..8bc2160 100644
--- a/CHANGES.rst
+++ b/CHANGES.rst
@@ -1,7 +1,7 @@
 Changelog of dask-geomodeling
 ===================================================
 
-2.3.9 (unreleased)
+2.3.9 (2022-03-07)
 ------------------
 
 - TemporalAggregate now correctly incorporates time resolution in retrieval of timekeys.
diff --git a/setup.py b/setup.py
index 1986920..851c01a 100644
--- a/setup.py
+++ b/setup.py
@@ -1,7 +1,7 @@
 from setuptools import setup
 import os
 
-version = '2.3.9.dev0'
+version = '2.3.9'
 
 long_description = "\n\n".join([open("README.rst").read(), open("CHANGES.rst").read()])