diff --git a/CHANGES.rst b/CHANGES.rst
index 1721aa0..74d9c3c 100644
--- a/CHANGES.rst
+++ b/CHANGES.rst
@@ -1,7 +1,7 @@
 Changes
 =======
 
-4.3 (unreleased)
+4.3 (2018-10-18)
 ----------------
 
 - Add attributes to support pluralization on a Message and update the
diff --git a/MANIFEST.in b/MANIFEST.in
index 6b9b1a2..9dd3f6b 100644
--- a/MANIFEST.in
+++ b/MANIFEST.in
@@ -13,3 +13,6 @@ global-exclude *.dll
 global-exclude *.pyc
 global-exclude *.pyo
 global-exclude *.so
+
+# added by check_manifest.py
+include *.yml
diff --git a/setup.py b/setup.py
index 749bd0e..2c530e8 100644
--- a/setup.py
+++ b/setup.py
@@ -101,7 +101,7 @@ def _unavailable(self, e):
 
 setup(
     name='zope.i18nmessageid',
-    version='4.3.dev0',
+    version='4.3',
     author='Zope Foundation and Contributors',
     author_email='zope-dev@zope.org',
     description='Message Identifiers for internationalization',