diff --git a/CHANGES.rst b/CHANGES.rst
index 4d9c2e4..9e34789 100644
--- a/CHANGES.rst
+++ b/CHANGES.rst
@@ -2,7 +2,7 @@
  CHANGES
 =========
 
-5.1 (unreleased)
+5.1 (2024-10-21)
 ================
 
 - Add support for Python 3.12, 3.13.
diff --git a/setup.py b/setup.py
index f511908..a6608e7 100644
--- a/setup.py
+++ b/setup.py
@@ -42,7 +42,7 @@ def read(*rnames):
 
 setup(
     name='zope.app.wsgi',
-    version='5.1.dev0',
+    version='5.1',
     url='https://github.com/zopefoundation/zope.app.wsgi',
     project_urls={
         'Issue Tracker': ('https://github.com/zopefoundation/'