diff --git a/.bumpversion.cfg b/.bumpversion.cfg
index d752ca5..0e8d8fd 100644
--- a/.bumpversion.cfg
+++ b/.bumpversion.cfg
@@ -1,5 +1,5 @@
 [bumpversion]
-current_version = 0.0.8
+current_version = 0.0.9-dev
 commit = True
 tag = False
 parse = (?P<major>\d+)\.(?P<minor>\d+)\.(?P<patch>\d+)(?:-(?P<release>[0-9A-Za-z-]+(?:\.[0-9A-Za-z-]+)*))?(?:\+(?P<build>[0-9A-Za-z-]+(?:\.[0-9A-Za-z-]+)*))?
diff --git a/docs/source/conf.py b/docs/source/conf.py
index b69a1cc..4843bef 100644
--- a/docs/source/conf.py
+++ b/docs/source/conf.py
@@ -28,7 +28,7 @@
 author = 'Mehdi Ali, Charles Tapley Hoyt, and Daniel Domingo-Fernández'
 
 # The full version, including alpha/beta/rc tags.
-release = '0.0.8'
+release = '0.0.9-dev'
 
 # The short X.Y version.
 parsed_version = re.match(
diff --git a/setup.cfg b/setup.cfg
index c9fee4e..770691e 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -4,7 +4,7 @@
 # Configuring setup()
 [metadata]
 name = biokeen
-version = 0.0.8
+version = 0.0.9-dev
 url = https://github.com/SmartDataAnalytics/BioKEEN
 author = Mehdi Ali
 author_email = mehdi.ali@cs.uni-bonn.de
diff --git a/src/biokeen/constants.py b/src/biokeen/constants.py
index 48f25ca..9eda5a0 100644
--- a/src/biokeen/constants.py
+++ b/src/biokeen/constants.py
@@ -28,7 +28,7 @@ class BiokeenConfig(easy_config.EasyConfig):
 os.makedirs(DATA_DIR, exist_ok=True)
 
 
-VERSION = '0.0.8'
+VERSION = '0.0.9-dev'
 CONFIG_PATH = os.path.join(DATA_DIR, "configuration.json")
 
 EMOJI = '🍩'