diff --git a/CHANGES.txt b/CHANGES.txt
index c3c8247..ed69ee3 100644
--- a/CHANGES.txt
+++ b/CHANGES.txt
@@ -2,6 +2,12 @@
 CHANGES
 =======
 
+0.1.1 (unreleased)
+------------------
+
+- Nothing changed yet.
+
+
 0.1.0 (2012-05-22)
 ------------------
 
diff --git a/setup.py b/setup.py
index e5072b9..eda610c 100644
--- a/setup.py
+++ b/setup.py
@@ -21,7 +21,7 @@ def read(*rnames):
 
 setup(
     name='m01.mongofake',
-    version='0.1.0',
+    version='0.1.1.dev0',
     author='Zope Foundation and Contributors',
     author_email='zope-dev@zope.org',
     description="Fake MongoDB implementation",