diff --git a/ChangeLog.rst b/ChangeLog.rst
index 230cc301..fc6df680 100644
--- a/ChangeLog.rst
+++ b/ChangeLog.rst
@@ -1,3 +1,12 @@
+1.0.3
+=====
+
+Release Date: 2021-11-24 JST
+
+* Fix Docstring (#459)
+* Fix error formatting (#463)
+* Improve error message about strict_map_key (#485)
+
 1.0.2
 =====
 
diff --git a/msgpack/_version.py b/msgpack/_version.py
index b7165245..fb878b35 100644
--- a/msgpack/_version.py
+++ b/msgpack/_version.py
@@ -1 +1 @@
-version = (1, 0, 3, "rc1")
+version = (1, 0, 3)