diff --git a/CHANGES.txt b/CHANGES.txt
index 2a4f6cf..2f44027 100644
--- a/CHANGES.txt
+++ b/CHANGES.txt
@@ -1,6 +1,19 @@
 Changes
 =======
 
+4.3.1 (2018-04-21)
+------------------
+
+- Change custom authentication backend failures from error to warning log level
+  [aleksihakli]
+
+- Set up strict code linting for CI pipeline that fails builds if linting does not pass
+  [aleksihakli]
+
+- Clean up old code base and tests based on linter errors
+  [aleksihakli]
+
+
 4.3.0 (2018-04-21)
 ------------------
 
diff --git a/axes/__init__.py b/axes/__init__.py
index 732b4ec..d25f134 100644
--- a/axes/__init__.py
+++ b/axes/__init__.py
@@ -1,6 +1,6 @@
 from __future__ import unicode_literals
 
-__version__ = '4.2.1'
+__version__ = '4.3.1'
 
 default_app_config = 'axes.apps.AppConfig'