diff --git a/CHANGES.rst b/CHANGES.rst
index 9758abe..9c9a117 100644
--- a/CHANGES.rst
+++ b/CHANGES.rst
@@ -1,3 +1,8 @@
+0.1.56 (unreleased)
+-----------------------
+
+- No changes yet.
+
 0.1.55 (2019-01-16)
 -----------------------
 
diff --git a/setup.cfg b/setup.cfg
index a724a43..6f7d65c 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -50,7 +50,7 @@ github_project = vcalderon2009/cosmo_utils
 # install_requires = astropy, scipy,
 install_requires = astropy, numpy, pandas, h5py, GitPython, cython, requests, numexpr, scipy, scikit-learn, BeautifulSoup4, wget, tqdm
 # version should be PEP386 compatible (http://www.python.org/dev/peps/pep-0386) 
-version = 0.1.55
+version = 0.1.56dev
 
 [entry_points]