diff --git a/CHANGES.rst b/CHANGES.rst
index 598cd89..3f16090 100644
--- a/CHANGES.rst
+++ b/CHANGES.rst
@@ -2,7 +2,7 @@
  zope.testrunner Changelog
 ===========================
 
-6.6 (unreleased)
+6.6 (2024-10-16)
 ================
 
 - Make tests compatible with Python 3.13 + add support for that version.
diff --git a/setup.py b/setup.py
index a48dab4..ce6909e 100644
--- a/setup.py
+++ b/setup.py
@@ -21,7 +21,7 @@
 from setuptools import setup
 
 
-version = '6.6.dev0'
+version = '6.6'
 
 INSTALL_REQUIRES = [
     'setuptools',