diff --git a/CHANGELOG.md b/CHANGELOG.md
index 45c226f..7177f8e 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,7 @@
+## 2.1.0
+- Use ESM worker for OffscreenCanvas worker renderer
+    - This enabled removing some duplicate code which decreases (uncompressed) bundle size from 29 kB to 18.6 kB
+
 ## 2.0.0
 - Render OffscreenCanvas in a web worker instead of the main thread
 - Don't create new link elements each time the canvas is started
diff --git a/package-lock.json b/package-lock.json
index 5d2a268..4bea916 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,12 +1,12 @@
 {
     "name": "favicon-marquee",
-    "version": "2.0.0",
+    "version": "2.1.0",
     "lockfileVersion": 2,
     "requires": true,
     "packages": {
         "": {
             "name": "favicon-marquee",
-            "version": "2.0.0",
+            "version": "2.1.0",
             "license": "MIT",
             "devDependencies": {
                 "@types/selenium-webdriver": "^4.1.15",
diff --git a/package.json b/package.json
index b95a4c5..4fbda06 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
     "name": "favicon-marquee",
-    "version": "2.0.0",
+    "version": "2.1.0",
     "description": "An animated scrolling favicon for your website",
     "author": "Sten Laane <sten@laane.xyz> (https://laane.xyz)",
     "main": "lib/main.js",