diff --git a/CHANGELOG.rst b/CHANGELOG.rst
index e3c5984..3aaa89a 100644
--- a/CHANGELOG.rst
+++ b/CHANGELOG.rst
@@ -1,7 +1,7 @@
 Changelog
 =========
 
-6.3.0 (unreleased)
+6.3.0 (2022-04-20)
 ------------------
 
 **New features**
diff --git a/setup.py b/setup.py
index e645081..d8fdf37 100644
--- a/setup.py
+++ b/setup.py
@@ -25,7 +25,7 @@
 
 setup(
     name='kinto-attachment',
-    version='6.3.0.dev0',
+    version='6.3.0',
     description="Attach files to Kinto records",
     long_description=readme + '\n\n' + history,
     author="Mozilla",