diff --git a/.bumpversion.cfg b/.bumpversion.cfg
index d355e31..21fc7a5 100644
--- a/.bumpversion.cfg
+++ b/.bumpversion.cfg
@@ -1,5 +1,5 @@
 [bumpversion]
-current_version = 0.9
+current_version = 0.9.1
 commit = False
 tag = False
 parse = (?P<major>\d+)\.(?P<minor>\d+)(\.(?P<patch>\d+))?
diff --git a/docs/conf.py b/docs/conf.py
index 49e9a42..596fdf2 100755
--- a/docs/conf.py
+++ b/docs/conf.py
@@ -87,9 +87,9 @@
 # the built documents.
 #
 # The short X.Y version.
-version = "0.9"
+version = "0.9.1"
 # The full version, including alpha/beta/rc tags.
-release = "0.9"
+release = "0.9.1"
 
 # The language for content autogenerated by Sphinx. Refer to documentation
 # for a list of supported languages.
diff --git a/microbenthos/__init__.py b/microbenthos/__init__.py
index cbc77b9..78e2b43 100644
--- a/microbenthos/__init__.py
+++ b/microbenthos/__init__.py
@@ -3,7 +3,7 @@
 
 __author__ = """Arjun Chennu"""
 __email__ = 'achennu@mpi-bremen.de'
-__version__ = '0.9'
+__version__ = '0.9.1'
 
 import logging
 
diff --git a/setup.py b/setup.py
index 18a1531..e670a8a 100644
--- a/setup.py
+++ b/setup.py
@@ -41,7 +41,7 @@ def get_description():
 
 setup(
     name='microbenthos',
-    version='0.9',
+    version='0.9.1',
     description="Modeling framework for microbenthic habitats useful for studies in "
                 "biogeochemistry and marine microbial ecology.",
     long_description=get_description(),