diff --git a/.claude-plugin/marketplace.json b/.claude-plugin/marketplace.json
index 039862a..7968e6f 100644
--- a/.claude-plugin/marketplace.json
+++ b/.claude-plugin/marketplace.json
@@ -1,6 +1,6 @@
 {
   "name": "motion-render",
-  "description": "motion-render: explainer videos with narration and BGM from a theme, via Claude Motion",
+  "description": "motion-render: explainer videos with narration, BGM and sound effects from a theme, via Claude Motion",
   "owner": {
     "name": "umiyosh"
   },
@@ -8,7 +8,7 @@
     {
       "name": "motion-render",
       "source": "./",
-      "description": "Make an animated explainer video from a theme with Claude Motion, add narration and BGM, and render it to MP4."
+      "description": "Make an animated explainer video from a theme with Claude Motion, add narration, BGM and sound effects, and render it to MP4."
     }
   ]
 }
diff --git a/.claude-plugin/plugin.json b/.claude-plugin/plugin.json
index 98513c2..57f1e3d 100644
--- a/.claude-plugin/plugin.json
+++ b/.claude-plugin/plugin.json
@@ -1,7 +1,7 @@
 {
   "name": "motion-render",
-  "version": "0.4.0",
-  "description": "Make an animated explainer video from a theme with Claude Motion, add narration (Gemini TTS) and BGM (Lyria), and render it to MP4.",
+  "version": "0.5.0",
+  "description": "Make an animated explainer video from a theme with Claude Motion, add narration (Gemini TTS), BGM (Lyria) and sound effects (ElevenLabs), and render it to MP4.",
   "author": {
     "name": "umiyosh"
   },
diff --git a/package-lock.json b/package-lock.json
index 658ddd5..bf02657 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,12 +1,12 @@
 {
   "name": "motion-render-plugin",
-  "version": "0.4.0",
+  "version": "0.5.0",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
       "name": "motion-render-plugin",
-      "version": "0.4.0",
+      "version": "0.5.0",
       "dependencies": {
         "ffmpeg-static": "5.2.0",
         "playwright-core": "1.56.1"
diff --git a/package.json b/package.json
index 5dc0b62..ac601d3 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "motion-render-plugin",
-  "version": "0.4.0",
+  "version": "0.5.0",
   "private": true,
   "description": "Claude Code plugin root for motion-render. Claude Code installs these dependencies when it installs the plugin; bin/motion-render runs the CLI in skills/motion-render.",
   "type": "module",
diff --git a/skills/motion-render/package-lock.json b/skills/motion-render/package-lock.json
index 115ac45..cfa6227 100644
--- a/skills/motion-render/package-lock.json
+++ b/skills/motion-render/package-lock.json
@@ -1,12 +1,12 @@
 {
   "name": "motion-render",
-  "version": "0.4.0",
+  "version": "0.5.0",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
       "name": "motion-render",
-      "version": "0.4.0",
+      "version": "0.5.0",
       "dependencies": {
         "ffmpeg-static": "5.2.0",
         "playwright-core": "1.56.1"
diff --git a/skills/motion-render/package.json b/skills/motion-render/package.json
index 34025cd..d3d1ed2 100644
--- a/skills/motion-render/package.json
+++ b/skills/motion-render/package.json
@@ -1,7 +1,7 @@
 {
   "name": "motion-render",
-  "version": "0.4.0",
-  "description": "Make an animated explainer video from a theme with Claude Motion, add narration (Gemini TTS) and BGM (Lyria), and render it to MP4.",
+  "version": "0.5.0",
+  "description": "Make an animated explainer video from a theme with Claude Motion, add narration (Gemini TTS), BGM (Lyria) and sound effects (ElevenLabs), and render it to MP4.",
   "repository": "github:umiyosh/motion-render",
   "type": "module",
   "bin": {