diff --git a/app/config.yml b/app/config.yml
index e7b3179..ca3604f 100644
--- a/app/config.yml
+++ b/app/config.yml
@@ -1,5 +1,5 @@
-# Minimum supported version: mdcms v0.3.2 | DO NOT REMOVE THIS COMMENT
-# MD-CMS v0.3.2 — Site configuration
+# mdcms v0.4 | DO NOT REMOVE THIS COMMENT
+# MD-CMS v0.4 — Site configuration
 #
 # Only `sitename` and `navigation` are required. Uncomment and edit the rest
 # as needed. See https://kbenestad.codeberg.page/md-cms for the full reference.
diff --git a/app/index.html b/app/index.html
index 3c1c3ad..48a33d2 100644
--- a/app/index.html
+++ b/app/index.html
@@ -1,4 +1,4 @@
-<!-- Minimum supported version: mdcms v0.3.8 | DO NOT REMOVE THIS COMMENT -->
+<!-- mdcms v0.4 | DO NOT REMOVE THIS COMMENT -->
 <!--
   MD-CMS v0.3.8 — Renderer
 
diff --git a/app/theme.yml b/app/theme.yml
index d6fead7..30be1bf 100644
--- a/app/theme.yml
+++ b/app/theme.yml
@@ -1,3 +1,4 @@
+# mdcms v0.4 | DO NOT REMOVE THIS COMMENT
 # mdcms theme — default
 # Edit colours, fonts, and layout here. See docs for full reference.
 
diff --git a/mdcms.py b/mdcms.py
index 149bed9..26c8414 100644
--- a/mdcms.py
+++ b/mdcms.py
@@ -1,11 +1,11 @@
 #!/usr/bin/env python3
 #
-# mdcms v0.3.9 — CLI companion
+# mdcms v0.4.0 — CLI companion
 #
 # Copyright 2026 Kristian Benestad
 # Apache License, Version 2.0 — https://www.apache.org/licenses/LICENSE-2.0
 
-"""MD-CMS v0.3.9 — CLI tool for managing and building MD-CMS sites."""
+"""MD-CMS v0.4.0 — CLI tool for managing and building MD-CMS sites."""
 
 import json
 import os
@@ -21,7 +21,7 @@ import certifi
 import click
 import yaml
 
-CLI_VERSION = "0.3.9"
+CLI_VERSION = "0.4.0"
 CLI_RELEASE_DATE = "17 May 2026"
 MIN_SUPPORTED_VERSION = "0.3"
 
diff --git a/pyproject.toml b/pyproject.toml
index 876b032..1b33a65 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -4,7 +4,7 @@ build-backend = "setuptools.build_meta"
 
 [project]
 name = "mdcms"
-version = "0.3.9"
+version = "0.4.0"
 description = "MD-CMS — Markdown-based CMS companion CLI"
 readme = "README.md"
 license = { text = "Apache-2.0" }