diff --git a/bin/update-version.sh b/bin/update-version.sh
new file mode 100755
index 00000000..0c2af579
--- /dev/null
+++ b/bin/update-version.sh
@@ -0,0 +1,23 @@
+#!/bin/bash
+
+if [ -z "$1" ]; then
+    echo "Usage: $0 <version>"
+    echo "Example: $0 4.5.0"
+    exit 1
+fi
+
+VERSION=$1
+
+  # Update package.json (line 3, no indentation)
+  awk -v ver="$VERSION" '/"version":/ {print "    \"version\": \"" ver "\","; next} 1' package.json > package.json.tmp && mv package.json.tmp package.json
+
+  # Update src/moto/license.js (line 6, VERSION field)
+  awk -v ver="$VERSION" '/VERSION:/ {print "    VERSION: \"" ver "\""; next} 1' src/moto/license.js > src/moto/license.js.tmp && mv src/moto/license.js.tmp src/moto/license.js
+
+  # Update web/kiri/manifest.json (line 2, preserves "Kiri:Moto" prefix)
+  awk -v ver="$VERSION" '/"name":/ {print "    \"name\": \"Kiri:Moto " ver "\","; next} 1' web/kiri/manifest.json > web/kiri/manifest.json.tmp && mv web/kiri/manifest.json.tmp web/kiri/manifest.json
+
+echo "Updated version to $VERSION in:"
+echo "  - package.json"
+echo "  - src/moto/license.js"
+echo "  - web/kiri/manifest.json"