diff --git a/CHANGELOG.md b/CHANGELOG.md
index 4b85ef91..9b51ab7a 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,7 @@
 ## Changelog
 
+- **v4.2.1**
+  - maintenance: updated deps, test coverage, removed isomorphic-fetch dev dep
 - **v4.2.0**
   - added: withContent now parses JSON->formData->text with fallthrough
 - **v4.1.1**
diff --git a/README.md b/README.md
index 5fb4079d..6c0697e5 100644
--- a/README.md
+++ b/README.md
@@ -48,13 +48,13 @@
 
 ---
 
-Itty is arguably the smallest (~450 bytes) feature-rich JavaScript router available, while enabling dead-simple API code.
+Itty is arguably the smallest (~460 bytes) feature-rich JavaScript router available, while enabling dead-simple API code.
 
 Designed originally for [Cloudflare Workers](https://itty.dev/itty-router/runtimes#Cloudflare%20Workers), itty can be used in browsers, service workers, edge functions, or runtimes like [Node](https://itty.dev/itty-router/runtimes#Node), [Bun](https://itty.dev/itty-router/runtimes#Bun), etc.!
 
 ## Features
 
-- Tiny. [~450](https://deno.bundlejs.com/?q=itty-router/Router) bytes for the Router itself, or [~1.6k](https://bundlephobia.com/package/itty-router) for the entire library (>100x smaller than [express.js](https://www.npmjs.com/package/express)).
+- Tiny. [~460](https://deno.bundlejs.com/?q=itty-router/Router) bytes for the Router itself, or [~1.6k](https://bundlephobia.com/package/itty-router) for the entire library (>100x smaller than [express.js](https://www.npmjs.com/package/express)).
 - [Fully-Typed](https://itty.dev/itty-router/typescript).
 - Shorter, simpler route code than most modern routers.
 - Dead-simple [middleware](https://itty.dev/itty-router/middleware) - use ours or write your own.
diff --git a/package.json b/package.json
index ac666fa4..b40ed382 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "itty-router",
-  "version": "4.2.0",
+  "version": "4.2.1",
   "description": "A tiny, zero-dependency router, designed to make beautiful APIs in any environment.",
   "main": "./index.js",
   "module": "./index.mjs",