diff --git a/.bumpversion.cfg b/.bumpversion.cfg
index 37f0146..a490e42 100644
--- a/.bumpversion.cfg
+++ b/.bumpversion.cfg
@@ -1,5 +1,5 @@
 [bumpversion]
-current_version = 0.8.0
+current_version = 0.9.0
 commit = True
 tag = True
 
@@ -14,3 +14,4 @@ replace = version = release = '{new_version}'
 [bumpversion:file:src/lipyphilic/__init__.py]
 search = __version__ = '{current_version}'
 replace = __version__ = '{new_version}'
+
diff --git a/docs/conf.py b/docs/conf.py
index 6422dce..c3e2879 100644
--- a/docs/conf.py
+++ b/docs/conf.py
@@ -31,7 +31,7 @@
 year = '2021'
 author = 'Paul Smith'
 copyright = '{0}, {1}'.format(year, author)
-version = release = '0.8.0'
+version = release = '0.9.0'
 
 autodoc_typehints = 'signature'
 autodoc_docstring_signature = True
diff --git a/setup.py b/setup.py
index 4eb69c2..6360580 100755
--- a/setup.py
+++ b/setup.py
@@ -23,7 +23,7 @@ def read(*names, **kwargs):
 
 setup(
     name='lipyphilic',
-    version='0.8.0',
+    version='0.9.0',
     license='GPL-2.1-or-later',
     description='Analyse MD simulations of lipids with python',
     long_description='%s\n%s' % (
diff --git a/src/lipyphilic/__init__.py b/src/lipyphilic/__init__.py
index 32a90a3..e4e49b3 100644
--- a/src/lipyphilic/__init__.py
+++ b/src/lipyphilic/__init__.py
@@ -1 +1 @@
-__version__ = '0.8.0'
+__version__ = '0.9.0'