diff --git a/README.md b/README.md
index 3d4fea690ee1cd9b4e9f51f2610be2a3b7b75ad5..745c2fac7185a17834a5ba6da748db48d7e6bd17 100644
--- a/README.md
+++ b/README.md
@@ -26,6 +26,10 @@ You will need to have both snakehouse and satella installed.
 
 # Changelog
 
+## v0.4.5
+
+* _TBA_
+
 ## v0.4.4
 
 * more error conditions during mmap will be supported as well
diff --git a/setup.py b/setup.py
index 3eedbb369295f24c271ed338c3b8c08ee399c799..6236fb00bd93df81bb9c211774729d0295c9fdef 100644
--- a/setup.py
+++ b/setup.py
@@ -28,7 +28,7 @@ if 'CI' in os.environ:
 
 
 setup(name='tempsdb',
-      version='0.4.4',
+      version='0.4.5a1',
       packages=['tempsdb'],
       install_requires=['satella>=2.14.24', 'ujson'],
       ext_modules=build([Multibuild('tempsdb', find_pyx('tempsdb')), ],