diff --git a/ChangeLog.rst b/ChangeLog.rst
index 515a3ea..9d7c8fc 100644
--- a/ChangeLog.rst
+++ b/ChangeLog.rst
@@ -1,7 +1,7 @@
 ChangeLog
 =========
 
-6.3 (unreleased)
+6.3 (2018-05-25)
 ----------------
 
 - Add support for Python's stretch+3.6 docker image.
diff --git a/setup.cfg b/setup.cfg
index 82b71e7..c9bd85f 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -1,6 +1,6 @@
 [metadata]
 name = grocker
-version = 6.3.dev0
+version = 6.3
 author = Polyconseil
 author_email = opensource+grocker@polyconseil.fr
 url = http://github.com/polyconseil/grocker