diff --git a/.bumpversion.cfg b/.bumpversion.cfg
index f208e98..b71374d 100644
--- a/.bumpversion.cfg
+++ b/.bumpversion.cfg
@@ -1,5 +1,5 @@
 [bumpversion]
-current_version = 1.0.4
+current_version = 1.0.5.dev
 parse = (?P<major>\d+)\.(?P<minor>\d+)\.(?P<patch>\d+)(\.(?P<release>[a-z0-9]+))?
 tag_name = {new_version}
 allow_dirty = True
diff --git a/chartpress.py b/chartpress.py
index 0e105e7..a68c662 100755
--- a/chartpress.py
+++ b/chartpress.py
@@ -19,7 +19,7 @@
 import docker
 from ruamel.yaml import YAML
 
-__version__ = '1.0.4'
+__version__ = '1.0.5.dev'
 
 # name of the environment variable with GitHub token
 GITHUB_TOKEN_KEY = 'GITHUB_TOKEN'
diff --git a/setup.py b/setup.py
index 5ec576c..9f24a21 100644
--- a/setup.py
+++ b/setup.py
@@ -26,7 +26,7 @@ def run(self):
 
 setup(
     name='chartpress',
-    version='1.0.4',
+    version='1.0.5.dev',
     py_modules=['chartpress'],
     cmdclass=cmdclass,
     entry_points={