diff --git a/CHANGES.rst b/CHANGES.rst
index ac54364..922821d 100644
--- a/CHANGES.rst
+++ b/CHANGES.rst
@@ -4,6 +4,11 @@ CHANGES
 master (unreleased)
 -------------------
 
+3.1.1 (2017.12.17)
+------------------
+
+- Update classifiers and README via GH-306, fixes GH-305
+
 3.1.0 (2017.12.11)
 ------------------
 
diff --git a/model_utils/__init__.py b/model_utils/__init__.py
index fbf309a..f23bd9c 100644
--- a/model_utils/__init__.py
+++ b/model_utils/__init__.py
@@ -1,4 +1,4 @@
 from .choices import Choices
 from .tracker import FieldTracker, ModelTracker
 
-__version__ = '3.1.0'
+__version__ = '3.1.1'