diff --git a/.bumpversion.cfg b/.bumpversion.cfg
index f9ad1d0..4dfb118 100644
--- a/.bumpversion.cfg
+++ b/.bumpversion.cfg
@@ -1,5 +1,5 @@
 [bumpversion]
-current_version = 0.3.1
+current_version = 0.4.0
 commit = True
 tag = True
 
diff --git a/README.rst b/README.rst
index ece35be..6ea21e0 100644
--- a/README.rst
+++ b/README.rst
@@ -100,7 +100,7 @@
 .. |language| image:: https://img.shields.io/github/languages/top/sphinx-toolbox/toctree_plus
 	:alt: GitHub top language
 
-.. |commits-since| image:: https://img.shields.io/github/commits-since/sphinx-toolbox/toctree_plus/v0.3.1
+.. |commits-since| image:: https://img.shields.io/github/commits-since/sphinx-toolbox/toctree_plus/v0.4.0
 	:target: https://github.com/sphinx-toolbox/toctree_plus/pulse
 	:alt: GitHub commits since tagged version
 
diff --git a/__pkginfo__.py b/__pkginfo__.py
index 26fb19f..589ed76 100644
--- a/__pkginfo__.py
+++ b/__pkginfo__.py
@@ -16,5 +16,5 @@
 		"extras_require",
 		]
 
-__version__ = "0.3.1"
+__version__ = "0.4.0"
 extras_require = {}
diff --git a/doc-source/index.rst b/doc-source/index.rst
index f4e914a..5d526b2 100644
--- a/doc-source/index.rst
+++ b/doc-source/index.rst
@@ -106,7 +106,7 @@
 		:alt: GitHub top language
 
 	.. |commits-since| github-shield::
-		:commits-since: v0.3.1
+		:commits-since: v0.4.0
 		:alt: GitHub commits since tagged version
 
 	.. |commits-latest| github-shield::
diff --git a/pyproject.toml b/pyproject.toml
index a3a6efb..11d0612 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -4,7 +4,7 @@ build-backend = "whey"
 
 [project]
 name = "toctree_plus"
-version = "0.3.1"
+version = "0.4.0"
 description = "Enhanced Sphinx TocTree which shows classes and functions as if they were sections."
 readme = "README.rst"
 keywords = [ "documentation", "sphinx", "sphinx-extension",]
diff --git a/repo_helper.yml b/repo_helper.yml
index 9744568..46eb984 100644
--- a/repo_helper.yml
+++ b/repo_helper.yml
@@ -4,7 +4,7 @@ import_name: sphinxcontrib.toctree_plus
 copyright_years: "2020-2021"
 author: "Dominic Davis-Foster"
 email: "dominic@davis-foster.co.uk"
-version: "0.3.1"
+version: "0.4.0"
 username: "sphinx-toolbox"
 assignee: "domdfcoding"
 primary_conda_channel: 'domdfcoding'
diff --git a/sphinxcontrib/toctree_plus/__init__.py b/sphinxcontrib/toctree_plus/__init__.py
index 98bd8a2..3e856c4 100644
--- a/sphinxcontrib/toctree_plus/__init__.py
+++ b/sphinxcontrib/toctree_plus/__init__.py
@@ -50,7 +50,7 @@
 __author__: str = "Dominic Davis-Foster"
 __copyright__: str = "2020-2021 Dominic Davis-Foster"
 __license__: str = "BSD"
-__version__: str = "0.3.1"
+__version__: str = "0.4.0"
 __email__: str = "dominic@davis-foster.co.uk"
 
 __all__ = ["TocTreePlusCollector", "setup"]