diff --git a/packages/headers/CHANGELOG.md b/packages/headers/CHANGELOG.md
index 00dfac3..7e916bf 100644
--- a/packages/headers/CHANGELOG.md
+++ b/packages/headers/CHANGELOG.md
@@ -2,7 +2,7 @@
 
 This is the changelog for [`headers`](https://github.com/mjackson/remix-the-web/tree/main/packages/headers). It follows [semantic versioning](https://semver.org/).
 
-## HEAD
+## v0.9.0 (2024-12-20)
 
 This release tightens up the type safety and brings `SuperHeaders` more in line with the built-in `Headers` interface.
 
diff --git a/packages/headers/package.json b/packages/headers/package.json
index f4a61e3..c1c991d 100644
--- a/packages/headers/package.json
+++ b/packages/headers/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@mjackson/headers",
-  "version": "0.8.0",
+  "version": "0.9.0",
   "description": "A toolkit for working with HTTP headers in JavaScript",
   "author": "Michael Jackson <mjijackson@gmail.com>",
   "license": "MIT",