diff --git a/HISTORY.rst b/HISTORY.rst
index 859d187..c0ddccc 100644
--- a/HISTORY.rst
+++ b/HISTORY.rst
@@ -3,6 +3,12 @@
 Release History
 ---------------
 
+0.9.21 (unreleased)
++++++++++++++++++++
+
+- Nothing changed yet.
+
+
 0.9.20 (2019-10-17)
 +++++++++++++++++++
 
diff --git a/setup.py b/setup.py
index 4eb45c1..ed3190f 100644
--- a/setup.py
+++ b/setup.py
@@ -22,7 +22,7 @@ with open('requirements.txt') as f:
 
 setup(
     name='mega.py',
-    version='0.9.20',
+    version='0.9.21.dev0',
     packages=find_packages('src', exclude=('tests', )),
     package_dir={'': 'src'},
     include_package_data=True,