diff --git a/.release-please-manifest.json b/.release-please-manifest.json
index 218393f..4cff5b9 100644
--- a/.release-please-manifest.json
+++ b/.release-please-manifest.json
@@ -1,3 +1,3 @@
 {
-  ".": "0.4.1"
+  ".": "0.4.2"
 }
diff --git a/CHANGELOG.md b/CHANGELOG.md
index d6639c5..92254a5 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,12 @@
 # Changelog
 
+## [0.4.2](https://github.com/elixir-tools/spitfire/compare/v0.4.1...v0.4.2) (2026-09-17)
+
+
+### Bug Fixes
+
+* add :format metadata to atoms ([#143](https://github.com/elixir-tools/spitfire/issues/143)) ([aab8309](https://github.com/elixir-tools/spitfire/commit/aab8309b4a92a5bb1472421c79e763f93975fc50))
+
 ## [0.4.1](https://github.com/elixir-tools/spitfire/compare/v0.4.0...v0.4.1) (2026-09-03)
 
 
diff --git a/mix.exs b/mix.exs
index 85fb904..496e0bc 100644
--- a/mix.exs
+++ b/mix.exs
@@ -7,7 +7,7 @@ defmodule Spitfire.MixProject do
     [
       app: :spitfire,
       description: "Error resilient parser for Elixir",
-      version: "0.4.1",
+      version: "0.4.2",
       elixir: "~> 1.15",
       start_permanent: Mix.env() == :prod,
       deps: deps(),