diff --git a/setup.cfg b/setup.cfg
index 7edd87d..9144a36 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -1,12 +1,12 @@
 [bumpversion]
-current_version = 0.3.9
+current_version = 0.3.10
 commit = True
 tag = True
 parse = (?P<major>\d+)
 	\.(?P<minor>\d+)
 	\.(?P<patch>\d+)
 	(?P<release>[a]*)(?P<num>\d*)
-serialize =
+serialize = 
 	{major}.{minor}.{patch}{release}{num}
 	{major}.{minor}.{patch}
 tag_name = {new_version}
@@ -15,7 +15,7 @@ tag_name = {new_version}
 name = pymetadata
 url = https://github.com/matthiaskoenig/pymetadata
 download_url = https://pypi.org/project/pymetadata
-project_urls =
+project_urls = 
 	Source Code = https://github.com/matthiaskoenig/pymetadata
 	Documentation = https://github.com/matthiaskoenig/pymetadata
 	Bug Tracker = https://github.com/matthiaskoenig/pymetadata/issues
@@ -23,7 +23,7 @@ author = Matthias Koenig
 author_email = konigmatt@googlemail.com
 maintainer = Matthias Koenig
 maintainer_email = konigmatt@googlemail.com
-classifiers =
+classifiers = 
 	Development Status :: 4 - Beta
 	Intended Audience :: Science/Research
 	License :: OSI Approved :: GNU Lesser General Public License v3 (LGPLv3)
@@ -39,7 +39,7 @@ license = LGPL-3.0
 description = pymetadata are python utilities for working with metadata.
 long_description = file: README.rst
 long_description_content_type = text/x-rst
-keywords =
+keywords = 
 	modeling
 	standardization
 	COMBINE
@@ -50,7 +50,7 @@ keywords =
 [options]
 zip_safe = True
 python_requires = >=3.8
-install_requires =
+install_requires = 
 	depinfo>=1.7
 	uuid>=1.30
 	lxml>=4.9.1
@@ -62,11 +62,11 @@ install_requires =
 	jinja2>=3.1.2
 	xmltodict>=0.13.0
 	pydantic>=2.1
-tests_require =
+tests_require = 
 	tox>=3.27
 	pytest
 packages = find:
-package_dir =
+package_dir = 
 	= src
 include_package_data = True
 
@@ -80,7 +80,7 @@ test = pytest
 where = src
 
 [options.extras_require]
-development =
+development = 
 	pip-tools>6.5.1
 	black>=22.1.0
 	bump2version>=1.0.1
@@ -98,7 +98,7 @@ universal = 1
 [bumpversion:part:release]
 optional_value = placeholder
 first_value = placeholder
-values =
+values = 
 	placeholder
 	a
 
diff --git a/setup.py b/setup.py
index 1a2e92c..14a93ac 100644
--- a/setup.py
+++ b/setup.py
@@ -4,4 +4,4 @@
 
 
 if __name__ == "__main__":
-    setup(version="0.3.9")
+    setup(version="0.3.10")
diff --git a/src/pymetadata/__init__.py b/src/pymetadata/__init__.py
index 13a4901..2fb4e40 100644
--- a/src/pymetadata/__init__.py
+++ b/src/pymetadata/__init__.py
@@ -2,7 +2,7 @@
 from pathlib import Path
 
 __author__ = "Matthias Koenig"
-__version__ = "0.3.9"
+__version__ = "0.3.10"
 
 
 program_name: str = "pymetadata"