diff --git a/packages/png/CHANGELOG.md b/packages/png/CHANGELOG.md
new file mode 100644
index 0000000..d0107f7
--- /dev/null
+++ b/packages/png/CHANGELOG.md
@@ -0,0 +1,7 @@
+# Changelog
+
+## @jquash/png@2.1.0
+
+### Added 
+
+- Include polyfills for Cloudflare Worker environment for easier compatibility
diff --git a/packages/png/package.json b/packages/png/package.json
index e473d25..0b6b18a 100644
--- a/packages/png/package.json
+++ b/packages/png/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@jsquash/png",
-  "version": "2.0.0",
+  "version": "2.1.0",
   "main": "index.js",
   "description": "Wasm png encoder and decoder supporting the browser. Repackaged from Squoosh App.",
   "repository": "jamsinclair/jSquash",
@@ -20,7 +20,7 @@
   "license": "Apache-2.0",
   "scripts": {
     "clean": "rm -rf dist",
-    "build": "npm run clean && tsc && cp -r codec package.json README.md .npmignore dist"
+    "build": "npm run clean && tsc && cp -r codec package.json README.md CHANGELOG.md .npmignore dist"
   },
   "dependencies": {
     "wasm-feature-detect": "^1.2.11"