diff --git a/.bumpversion.cfg b/.bumpversion.cfg
index 241329b..c913852 100644
--- a/.bumpversion.cfg
+++ b/.bumpversion.cfg
@@ -1,7 +1,7 @@
 [bumpversion]
 commit = True
 tag = True
-current_version = 0.5.6
+current_version = 0.5.7-dev
 parse = (?P<major>\d+)\.(?P<minor>\d+)\.(?P<patch>\d+)(\-(?P<release>[a-z]+))?
 serialize = 
 	{major}.{minor}.{patch}-{release}
diff --git a/README.rst b/README.rst
index cad9f28..65a3838 100644
--- a/README.rst
+++ b/README.rst
@@ -394,6 +394,7 @@ Changes
 =======
 
 **unreleased**
+**v0.5.7-dev**
 **v0.5.6**
 
 - Added compatibility with `bumpversion` by making script install as `bumpversion` as well
diff --git a/bumpversion/__init__.py b/bumpversion/__init__.py
index 0378823..0d96fcb 100644
--- a/bumpversion/__init__.py
+++ b/bumpversion/__init__.py
@@ -33,7 +33,7 @@
 if sys.version_info[0] == 2:
     sys.stdout = codecs.getwriter('utf-8')(sys.stdout)
 
-__VERSION__ = '0.5.6'
+__VERSION__ = '0.5.7-dev'
 
 DESCRIPTION = 'bumpversion: v{} (using Python v{})'.format(
     __VERSION__,
diff --git a/setup.py b/setup.py
index 1ff7dcd..b29496e 100644
--- a/setup.py
+++ b/setup.py
@@ -11,7 +11,7 @@
 
 setup(
     name='bump2version',
-    version='0.5.6',
+    version='0.5.7-dev',
     url='https://github.com/c4urself/bump2version',
     author='Christian Verkerk',
     author_email='christianverkerk@ymail.com',