diff --git a/.bumpversion.cfg b/.bumpversion.cfg
index 4e755b04..d189d1e2 100644
--- a/.bumpversion.cfg
+++ b/.bumpversion.cfg
@@ -1,16 +1,16 @@
 [bumpversion]
-current_version = 0.10.1rc0
+current_version = 0.10.1dev0
 commit = True
 tag = True
 parse = (?P<major>\d+)\.(?P<minor>\d+)\.(?P<patch>\d+)((?P<release>[a-z]+)(?P<build>\d+))?
-serialize = 
+serialize =
 	{major}.{minor}.{patch}{release}{build}
 	{major}.{minor}.{patch}
 
 [bumpversion:part:release]
 optional_value = rc
 first_value = a
-values = 
+values =
 	dev
 	a
 	b
diff --git a/conda/decode/meta.yaml b/conda/decode/meta.yaml
index 01ab6051..3f90a035 100644
--- a/conda/decode/meta.yaml
+++ b/conda/decode/meta.yaml
@@ -1,6 +1,6 @@
 package:
   name: decode
-  version: "0.10.1"  # do not modify by hand; set and sync with bumpversion
+  version: "0.10.1dev0"  # do not modify by hand; set and sync with bumpversion
 
 source:
      - path: ../..
diff --git a/decode/__init__.py b/decode/__init__.py
index 40f20197..15efa730 100644
--- a/decode/__init__.py
+++ b/decode/__init__.py
@@ -4,7 +4,7 @@
 
 """
 
-__version__ = '0.10.1'  # do not modify by hand set and sync with bumpversion
+__version__ = '0.10.1dev0'  # do not modify by hand set and sync with bumpversion
 __author__ = 'Lucas-Raphael Mueller, Artur Speiser'
 __repo__ = 'https://github.com/TuragaLab/DECODE/master/gateway.yaml'  # main repo
 __gateway__ = 'https://raw.githubusercontent.com/TuragaLab/DECODE/master/gateway.yaml'  # gateway
diff --git a/setup.py b/setup.py
index e967f3b0..64037da6 100644
--- a/setup.py
+++ b/setup.py
@@ -41,7 +41,7 @@
 
 setup(
     name='decode',
-    version='0.10.1',  # do not modify by hand set and sync with bumpversion
+    version='0.10.1dev0',  # do not modify by hand set and sync with bumpversion
     packages=setuptools.find_packages(),
     include_package_data=True,
     install_requires=requirements,