diff --git a/CHANGELOG.md b/CHANGELOG.md
index 76239d70..f44a7671 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,19 @@
 # Changelog
 
+## [0.21.0-rc.0] - 2026-05-19
+
+### 🐛 Bug Fixes
+
+* improve weval and wizer error reporting (#333) by @andreiltd in #333
+
+
+### ⚙️ Miscellaneous Tasks
+
+* *(deps)* update js-component-bindgen (#337) by @vados-cosmonic in #337
+
+
+
+
 ## [0.20.0] - 2026-04-14
 
 ### 🚀 Features
diff --git a/package.json b/package.json
index d79925f6..3bd09c37 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@bytecodealliance/componentize-js",
-  "version": "0.20.0",
+  "version": "0.21.0-rc.0",
   "homepage": "https://github.com/bytecodealliance/componentize-js#readme",
   "description": "ESM -> WebAssembly Component creator, via a SpiderMonkey JS engine embedding",
   "type": "module",
diff --git a/src/cli.js b/src/cli.js
index c5e2438c..9020c2fa 100755
--- a/src/cli.js
+++ b/src/cli.js
@@ -27,7 +27,7 @@ export async function componentizeCmd(jsSource, opts) {
 }
 
 program
-  .version('0.20.0')
+  .version('0.21.0-rc.0')
   .description('Create a component from a JavaScript module')
   .usage('<js-source> --wit wit-world.wit -o <component-path>')
   .argument('<js-source>', 'JS source file to build')