diff --git a/.gitignore b/.gitignore
index a09405a..ebd0ff6 100644
--- a/.gitignore
+++ b/.gitignore
@@ -9,3 +9,4 @@ htmlcov/
 docs/_build/
 .idea/
 *.mo
+.eggs/
diff --git a/CHANGES.rst b/CHANGES.rst
index 01dc0a8..fbc92fc 100644
--- a/CHANGES.rst
+++ b/CHANGES.rst
@@ -1,6 +1,10 @@
 CHANGES
 =======
 
+master (unreleased)
+-------------------
+
+
 2.3 (2015.07.17)
 ----------------
 
diff --git a/model_utils/__init__.py b/model_utils/__init__.py
index eff53a7..a09be7d 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__ = '2.3'
+__version__ = '2.4a1'