diff --git a/CHANGELOG.rst b/CHANGELOG.rst
index c4b9b2f..5cdcf8a 100644
--- a/CHANGELOG.rst
+++ b/CHANGELOG.rst
@@ -1,7 +1,14 @@
 master
 ------
 
-5.0.0 (2020-12-01)
+5.0.1 (2021-01-19)
+------------------
+
+Enhancements:
+~~~~~~~~~~~~~
+-  `#98 <https://github.com/castle/castle-python/pull/98>`__ rename the namespace from ``IP`` to ``IPs``
+
+5.0.0 (2021-01-19)
 ------------------
 
 Breaking Changes:
diff --git a/LICENSE b/LICENSE
index 4050cae..b463fa8 100644
--- a/LICENSE
+++ b/LICENSE
@@ -1,6 +1,6 @@
 The MIT License
 
-Copyright (c) 2020 Castle
+Copyright (c) 2021 Castle
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal
diff --git a/castle/version.py b/castle/version.py
index 068ecf0..96b4b92 100644
--- a/castle/version.py
+++ b/castle/version.py
@@ -1 +1 @@
-VERSION = '5.0.0'
+VERSION = '5.0.1'