diff --git a/.bumpversion.cfg b/.bumpversion.cfg
index 8b434ca..31337f5 100644
--- a/.bumpversion.cfg
+++ b/.bumpversion.cfg
@@ -1,5 +1,5 @@
 [bumpversion]
-current_version = 0.4.0
+current_version = 0.5.0
 commit = True
 tag = True
 
diff --git a/README.rst b/README.rst
index 40ca9ab..c29269c 100644
--- a/README.rst
+++ b/README.rst
@@ -101,7 +101,7 @@ configconfig
 .. |language| image:: https://img.shields.io/github/languages/top/domdfcoding/configconfig
 	:alt: GitHub top language
 
-.. |commits-since| image:: https://img.shields.io/github/commits-since/domdfcoding/configconfig/v0.4.0
+.. |commits-since| image:: https://img.shields.io/github/commits-since/domdfcoding/configconfig/v0.5.0
 	:target: https://github.com/domdfcoding/configconfig/pulse
 	:alt: GitHub commits since tagged version
 
diff --git a/__pkginfo__.py b/__pkginfo__.py
index f5c7163..8976ba6 100644
--- a/__pkginfo__.py
+++ b/__pkginfo__.py
@@ -26,7 +26,7 @@
 2020-2021 Dominic Davis-Foster <dominic@davis-foster.co.uk>
 """
 
-__version__ = "0.4.0"
+__version__ = "0.5.0"
 
 repo_root = pathlib.Path(__file__).parent
 install_requires = (repo_root / "requirements.txt").read_text(encoding="utf-8").split('\n')
diff --git a/configconfig/__init__.py b/configconfig/__init__.py
index b994219..bf362d6 100644
--- a/configconfig/__init__.py
+++ b/configconfig/__init__.py
@@ -30,5 +30,5 @@
 __copyright__: str = "2020 Dominic Davis-Foster"
 
 __license__: str = "MIT License"
-__version__: str = "0.4.0"
+__version__: str = "0.5.0"
 __email__: str = "dominic@davis-foster.co.uk"
diff --git a/doc-source/index.rst b/doc-source/index.rst
index 4bc2f09..892b16a 100644
--- a/doc-source/index.rst
+++ b/doc-source/index.rst
@@ -103,7 +103,7 @@ configconfig
 	:alt: GitHub top language
 
 .. |commits-since| github-shield::
-	:commits-since: v0.4.0
+	:commits-since: v0.5.0
 	:alt: GitHub commits since tagged version
 
 .. |commits-latest| github-shield::
diff --git a/repo_helper.yml b/repo_helper.yml
index f13fac9..3437015 100644
--- a/repo_helper.yml
+++ b/repo_helper.yml
@@ -5,7 +5,7 @@ copyright_years: '2020-2021'
 author: 'Dominic Davis-Foster'
 email: 'dominic@davis-foster.co.uk'
 username: 'domdfcoding'
-version: '0.4.0'
+version: '0.5.0'
 license: 'MIT'
 short_desc: 'Load and validate YAML configuration files.'
 
diff --git a/tox.ini b/tox.ini
index 9e8f85b..cefe414 100644
--- a/tox.ini
+++ b/tox.ini
@@ -119,6 +119,7 @@ commands =
 plugins = coverage_pyver_pragma
 
 [coverage:report]
+fail_under = 80
 exclude_lines =
     raise AssertionError
     raise NotImplementedError