diff --git a/cli_docs/conf.py b/cli_docs/conf.py
index f49b70d..0c76e77 100644
--- a/cli_docs/conf.py
+++ b/cli_docs/conf.py
@@ -15,9 +15,9 @@ copyright = datetime.date.today().year + ' Soren Bjornstad'
 author = 'Soren Bjornstad'
 
 # The short X.Y version
-version = "0.3.0"
+version = "0.4.0"
 # The full version, including alpha/beta/rc tags
-release = "0.3.0"
+release = "0.4.0"
 
 
 # -- General configuration ---------------------------------------------------
diff --git a/setup.py b/setup.py
index 27407b6..ead485b 100644
--- a/setup.py
+++ b/setup.py
@@ -9,7 +9,7 @@ with open("README.md", "r") as fh:
 
 setuptools.setup(
     name="tzk",
-    version="0.3.0",
+    version="0.4.0",
     author="Soren I. Bjornstad",
     author_email="zettelkasten@sorenbjornstad.com",
     description="Build tool for TiddlyWiki Zettelkasten",
diff --git a/tzk/util.py b/tzk/util.py
index ceb96c4..af812b3 100644
--- a/tzk/util.py
+++ b/tzk/util.py
@@ -10,7 +10,7 @@ import sys
 from typing import Any, Callable, Dict, NoReturn
 
 
-TZK_VERSION = "0.3.0"
+TZK_VERSION = "0.4.0"
 
 
 class BuildError(Exception):