diff --git a/lerna.json b/lerna.json
index bf09b721..d7fe7fc2 100644
--- a/lerna.json
+++ b/lerna.json
@@ -2,6 +2,6 @@
   "packages": [
     "packages/*"
   ],
-  "version": "0.1.156",
+  "version": "0.1.157-alpha.0",
   "npmClient": "pnpm"
 }
diff --git a/packages/zenn-cli/package.json b/packages/zenn-cli/package.json
index eeb798f7..eed57a57 100644
--- a/packages/zenn-cli/package.json
+++ b/packages/zenn-cli/package.json
@@ -1,6 +1,6 @@
 {
   "name": "zenn-cli",
-  "version": "0.1.156",
+  "version": "0.1.157-alpha.0",
   "description": "Preview Zenn content locally.",
   "repository": {
     "type": "git",
diff --git a/packages/zenn-content-css/package.json b/packages/zenn-content-css/package.json
index 90d449a1..eb99af4b 100644
--- a/packages/zenn-content-css/package.json
+++ b/packages/zenn-content-css/package.json
@@ -1,6 +1,6 @@
 {
   "name": "zenn-content-css",
-  "version": "0.1.156",
+  "version": "0.1.157-alpha.0",
   "license": "MIT",
   "description": "Zenn flavor content style.",
   "repository": {
diff --git a/packages/zenn-embed-elements/package.json b/packages/zenn-embed-elements/package.json
index 4b7dd15f..aaa971cc 100644
--- a/packages/zenn-embed-elements/package.json
+++ b/packages/zenn-embed-elements/package.json
@@ -1,6 +1,6 @@
 {
   "name": "zenn-embed-elements",
-  "version": "0.1.156",
+  "version": "0.1.157-alpha.0",
   "license": "MIT",
   "description": "Web components for embedded contents.",
   "repository": {
diff --git a/packages/zenn-markdown-html/__tests__/custom-syntax/embed/docswell.test.ts b/packages/zenn-markdown-html/__tests__/custom-syntax/embed/docswell.test.ts
index fe47bd6c..8cb4b506 100644
--- a/packages/zenn-markdown-html/__tests__/custom-syntax/embed/docswell.test.ts
+++ b/packages/zenn-markdown-html/__tests__/custom-syntax/embed/docswell.test.ts
@@ -8,7 +8,7 @@ describe('Docswell', () => {
         '@[docswell](https://www.docswell.com/slide/LK7J5V/embed)'
       );
       expect(html).toContain(
-        '<span class="embed-block embed-docswell"><iframe src="https://www.docswell.com/slide/LK7J5V/embed" allowfullscreen="true" width="620" style="border:1px solid #ccc;display:block;margin:0px auto;padding:0px;aspect-ratio:620/349"></iframe></span>'
+        '<span class="embed-block embed-docswell"><iframe src="https://www.docswell.com/slide/LK7J5V/embed" allowfullscreen="true" width="100%" style="border:1px solid #ccc;display:block;margin:0px auto;padding:0px;aspect-ratio:16/9"></iframe></span>'
       );
     });
   });
@@ -19,7 +19,7 @@ describe('Docswell', () => {
         '@[docswell](https://www.docswell.com/s/ku-suke/LK7J5V-hello-docswell)'
       );
       expect(html).toContain(
-        '<span class="embed-block embed-docswell"><iframe src="https://www.docswell.com/slide/LK7J5V/embed" allowfullscreen="true" width="620" style="border:1px solid #ccc;display:block;margin:0px auto;padding:0px;aspect-ratio:620/349"></iframe></span>'
+        '<span class="embed-block embed-docswell"><iframe src="https://www.docswell.com/slide/LK7J5V/embed" allowfullscreen="true" width="100%" style="border:1px solid #ccc;display:block;margin:0px auto;padding:0px;aspect-ratio:16/9"></iframe></span>'
       );
     });
   });
diff --git a/packages/zenn-markdown-html/package.json b/packages/zenn-markdown-html/package.json
index b4206d20..5c45dcbc 100644
--- a/packages/zenn-markdown-html/package.json
+++ b/packages/zenn-markdown-html/package.json
@@ -1,6 +1,6 @@
 {
   "name": "zenn-markdown-html",
-  "version": "0.1.156",
+  "version": "0.1.157-alpha.0",
   "license": "MIT",
   "description": "Convert markdown to zenn flavor html.",
   "main": "lib/index.js",
diff --git a/packages/zenn-markdown-html/src/embed.ts b/packages/zenn-markdown-html/src/embed.ts
index 4d25b6be..494746d8 100644
--- a/packages/zenn-markdown-html/src/embed.ts
+++ b/packages/zenn-markdown-html/src/embed.ts
@@ -89,7 +89,7 @@ export const embedGenerators: Readonly<EmbedGeneratorList> = {
     if (!slideUrl) {
       return errorMessage;
     }
-    return `<span class="embed-block embed-docswell"><iframe src="${slideUrl}" allowfullscreen="true" class="docswell-iframe" width="620" height="349" style="border: 1px solid #ccc; display: block; margin: 0px auto; padding: 0px; aspect-ratio: 620/349;"></iframe></span>`;
+    return `<span class="embed-block embed-docswell"><iframe src="${slideUrl}" allowfullscreen="true" class="docswell-iframe" width="100%" style="border: 1px solid #ccc; display: block; margin: 0px auto; padding: 0px; aspect-ratio: 16/9"></iframe></span>`;
   },
   jsfiddle(str) {
     if (!isJsfiddleUrl(str)) {
diff --git a/packages/zenn-model/package.json b/packages/zenn-model/package.json
index 17b0187d..b4d9d4b2 100644
--- a/packages/zenn-model/package.json
+++ b/packages/zenn-model/package.json
@@ -1,6 +1,6 @@
 {
   "name": "zenn-model",
-  "version": "0.1.156",
+  "version": "0.1.157-alpha.0",
   "license": "MIT",
   "description": "Model utils for Zenn contents",
   "main": "lib/index.js",