diff --git a/CHANGES.rst b/CHANGES.rst
index 8f4607f3..bef8c041 100644
--- a/CHANGES.rst
+++ b/CHANGES.rst
@@ -2,6 +2,12 @@
 CHANGELOG
 =========
 
+0.8.21 (2019-02-12)
+-------------------
+
+* Remove usage of ``colander.timeparse()`` function.
+
+
 0.8.20 (2019-02-08)
 -------------------
 
diff --git a/tailbone/_version.py b/tailbone/_version.py
index da20567d..17c5c0d8 100644
--- a/tailbone/_version.py
+++ b/tailbone/_version.py
@@ -1,3 +1,3 @@
 # -*- coding: utf-8; -*-
 
-__version__ = '0.8.20'
+__version__ = '0.8.21'