diff --git a/CHANGELOG.md b/CHANGELOG.md
index 7d3d6540..9647bf54 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,20 @@
 # Changelog
 
+## Version 0.4.0 🎨
+
+Template customization & UI improvements
+
+### Added
+- Template editor for customizing Markdown campaign styles
+
+### Changed
+- Improved index pages for forms, templates, and campaigns
+- Updated dependencies, using upstream of `Swoosh` again
+
+### Fixed
+- Fixed broken template download links in production
+
+
 ## Version 0.3.0
 
 Scheduling campaigns & WYSIWYG editor ⏲️
diff --git a/mix.exs b/mix.exs
index 07ca33e5..3324338e 100644
--- a/mix.exs
+++ b/mix.exs
@@ -4,7 +4,7 @@ defmodule Keila.MixProject do
   def project do
     [
       app: :keila,
-      version: "0.3.0",
+      version: "0.4.0",
       elixir: "~> 1.11",
       elixirc_paths: elixirc_paths(Mix.env()),
       compilers: [:phoenix, :gettext] ++ Mix.compilers(),