diff --git a/Gemfile.lock b/Gemfile.lock
index cdf5b22..b5762d4 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -1,7 +1,7 @@
 PATH
   remote: .
   specs:
-    ruby_wasm_ui (0.8.3)
+    ruby_wasm_ui (0.9.0)
       js (~> 2.7)
       listen (~> 3.8)
       puma (~> 6.0)
diff --git a/Makefile b/Makefile
new file mode 100644
index 0000000..726c57a
--- /dev/null
+++ b/Makefile
@@ -0,0 +1,53 @@
+.PHONY: bump help
+
+help:
+	@echo "Usage: make bump <version>"
+	@echo "       make bump VERSION=<version>"
+	@echo "Example: make bump 0.9.0"
+	@echo ""
+	@echo "This command updates the version number in the following files:"
+	@echo "  - lib/ruby_wasm_ui/version.rb"
+	@echo "  - package.json"
+	@echo "  - packages/npm-packages/runtime/package.json"
+	@echo "  - README.md"
+	@echo "  - package-lock.json (via npm install)"
+	@echo "  - packages/npm-packages/runtime/package-lock.json (via npm install)"
+
+# Get version from position argument (if VERSION is not already set)
+VERSION_ARG := $(word 2,$(MAKECMDGOALS))
+ifndef VERSION
+  ifneq ($(VERSION_ARG),)
+    VERSION := $(VERSION_ARG)
+  endif
+endif
+
+bump:
+	@if [ -z "$(VERSION)" ]; then \
+		echo "Error: VERSION is required. Usage: make bump 0.9.0"; \
+		exit 1; \
+	fi
+	@echo "Bumping version to $(VERSION)..."
+	@# Update lib/ruby_wasm_ui/version.rb
+	@sed -i '' 's/VERSION = ".*"/VERSION = "$(VERSION)"/' lib/ruby_wasm_ui/version.rb
+	@echo "✓ Updated lib/ruby_wasm_ui/version.rb"
+	@# Update root package.json
+	@sed -i '' 's/"version": ".*"/"version": "$(VERSION)"/' package.json
+	@echo "✓ Updated package.json"
+	@# Update packages/npm-packages/runtime/package.json
+	@sed -i '' 's/"version": ".*"/"version": "$(VERSION)"/' packages/npm-packages/runtime/package.json
+	@echo "✓ Updated packages/npm-packages/runtime/package.json"
+	@# Update README.md (unpkg.com URL)
+	@sed -i '' 's|unpkg.com/ruby-wasm-ui@[0-9.]*|unpkg.com/ruby-wasm-ui@$(VERSION)|' README.md
+	@echo "✓ Updated README.md"
+	@echo ""
+	@echo "Updating package-lock.json files..."
+	@npm install --package-lock-only
+	@echo "✓ Updated root package-lock.json"
+	@cd packages/npm-packages/runtime && npm install --package-lock-only && cd ../../..
+	@echo "✓ Updated packages/npm-packages/runtime/package-lock.json"
+	@echo ""
+	@echo "Version bumped to $(VERSION) successfully!"
+
+# Prevent make from treating the version argument as a target
+%:
+	@:
diff --git a/README.md b/README.md
index 4de4847..3a4a419 100644
--- a/README.md
+++ b/README.md
@@ -21,7 +21,7 @@ Create an HTML file:
 <!DOCTYPE html>
 <html>
   <head>
-    <script src="https://unpkg.com/ruby-wasm-ui@0.8.3"></script>
+    <script src="https://unpkg.com/ruby-wasm-ui@0.9.0"></script>
     <script defer type="text/ruby" src="app.rb"></script>
   </head>
   <body>
@@ -112,20 +112,38 @@ bundle install
 
 ### Building Your Application
 
-1. Build Ruby WASM:
+1. Set up your project (first time only):
 
 ```bash
-bundle exec rbwasm build --ruby-version 3.4 -o ruby.wasm
+bundle exec ruby-wasm-ui setup
 ```
 
+This command will:
+- Configure excluded gems for WASM build
+- Build Ruby WASM file
+- Update `.gitignore`
+- Create initial `src/index.html` and `src/index.rb` files
+
 2. Pack your application files:
 
 ```bash
-bundle exec rbwasm pack ruby.wasm --dir ./src::./src -o src.wasm
+bundle exec ruby-wasm-ui pack
 ```
 
 This command packs your Ruby files from the `./src` directory into the WASM file.
 
+**Additional Commands:**
+
+- **Development server**: Start a development server with file watching and auto-build:
+  ```bash
+  bundle exec ruby-wasm-ui dev
+  ```
+
+- **Rebuild Ruby WASM**: Rebuild the Ruby WASM file when you add new gems:
+  ```bash
+  bundle exec ruby-wasm-ui rebuild
+  ```
+
 ### Creating Your HTML File
 
 Create an HTML file in the `src` directory that loads the WASM file:
diff --git a/lib/ruby_wasm_ui/version.rb b/lib/ruby_wasm_ui/version.rb
index 1d71fb0..887d3f5 100644
--- a/lib/ruby_wasm_ui/version.rb
+++ b/lib/ruby_wasm_ui/version.rb
@@ -1,5 +1,5 @@
 # frozen_string_literal: true
 
 module RubyWasmUi
-  VERSION = "0.8.3"
+  VERSION = "0.9.0"
 end
diff --git a/package-lock.json b/package-lock.json
index c0ebb6c..3274b45 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,12 +1,12 @@
 {
   "name": "ruby-wasm-ui-project",
-  "version": "0.8.2",
+  "version": "0.9.0",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
       "name": "ruby-wasm-ui-project",
-      "version": "0.8.2",
+      "version": "0.9.0",
       "license": "MIT",
       "workspaces": [
         "packages/*"
diff --git a/package.json b/package.json
index 57cf195..08ab3ed 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "ruby-wasm-ui-project",
-  "version": "0.8.2",
+  "version": "0.9.0",
   "private": true,
   "description": "A project to ruby.wasm ui framework",
   "scripts": {
diff --git a/packages/npm-packages/runtime/package-lock.json b/packages/npm-packages/runtime/package-lock.json
index 761e1fa..10f2079 100644
--- a/packages/npm-packages/runtime/package-lock.json
+++ b/packages/npm-packages/runtime/package-lock.json
@@ -1,12 +1,12 @@
 {
   "name": "ruby-wasm-ui",
-  "version": "0.8.3",
+  "version": "0.9.0",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
       "name": "ruby-wasm-ui",
-      "version": "0.8.3",
+      "version": "0.9.0",
       "license": "MIT",
       "devDependencies": {
         "@rollup/plugin-replace": "^6.0.2",
diff --git a/packages/npm-packages/runtime/package.json b/packages/npm-packages/runtime/package.json
index 5ac9ea1..f1d49e7 100644
--- a/packages/npm-packages/runtime/package.json
+++ b/packages/npm-packages/runtime/package.json
@@ -1,6 +1,6 @@
 {
   "name": "ruby-wasm-ui",
-  "version": "0.8.3",
+  "version": "0.9.0",
   "description": "",
   "main": "dist/ruby-wasm-ui.js",
   "files": [