diff --git a/.changeset/prettier-plugin-marko-4-1.md b/.changeset/prettier-plugin-marko-4-1.md
new file mode 100644
index 00000000..eb563edb
--- /dev/null
+++ b/.changeset/prettier-plugin-marko-4-1.md
@@ -0,0 +1,6 @@
+---
+"@marko/language-server": patch
+"marko-vscode": patch
+---
+
+Update prettier-plugin-marko to 4.1, so formatting keeps the `async` keyword on shorthand methods.
diff --git a/packages/language-server/package.json b/packages/language-server/package.json
index f7c3ec2d..c7825f40 100644
--- a/packages/language-server/package.json
+++ b/packages/language-server/package.json
@@ -51,7 +51,7 @@
     "jsdom": "^29.1.1",
     "marko": "^5.39.33",
     "prettier": "^3.8.4",
-    "prettier-plugin-marko": "^4.0.10",
+    "prettier-plugin-marko": "^4.1.0",
     "relative-import-path": "^1.0.1",
     "typescript": "^6.0.3",
     "vscode-css-languageservice": "^6.3.10",
diff --git a/packages/vscode/src/__tests__/format.test.ts b/packages/vscode/src/__tests__/format.test.ts
index 1a87c522..1ca6fec0 100644
--- a/packages/vscode/src/__tests__/format.test.ts
+++ b/packages/vscode/src/__tests__/format.test.ts
@@ -31,6 +31,20 @@ describe("format", () => {
     of=those
 />
 
+`,
+    );
+  });
+
+  it("async shorthand method", async () => {
+    await snap.inline(
+      () => format("<button async onClick() { await save() }>go</button>"),
+      `
+<button async onClick() {
+    await save();
+}>
+    go
+</button>
+
 `,
     );
   });
diff --git a/pnpm-lock.yaml b/pnpm-lock.yaml
index e9e5c105..c25dc421 100644
--- a/pnpm-lock.yaml
+++ b/pnpm-lock.yaml
@@ -106,8 +106,8 @@ importers:
         specifier: ^3.8.4
         version: 3.8.4
       prettier-plugin-marko:
-        specifier: ^4.0.10
-        version: 4.0.10
+        specifier: ^4.1.0
+        version: 4.1.0
       relative-import-path:
         specifier: ^1.0.1
         version: 1.0.1
@@ -2649,8 +2649,8 @@ packages:
     resolution: {integrity: sha512-vkcDPrRZo1QZLbn5RLGPpg/WmIQ65qoWWhcGKf/b5eplkkarX0m9z8ppCat4mlOqUsWpyNuYgO3VRyrYHSzX5g==}
     engines: {node: '>= 0.8.0'}
 
-  prettier-plugin-marko@4.0.10:
-    resolution: {integrity: sha512-xEzL8+T1/+3oNWJGPNDMlgbeJM7l48pWLiApMLJyvcMe36p4mw0Ld7FBaQVy7nSQDArKtIv4x+6Zb9j32hy2ng==}
+  prettier-plugin-marko@4.1.0:
+    resolution: {integrity: sha512-cm3DgiGqXnXsn1aBK1Ajfdlb+W4zynl9RHc5Ega+lySHAbJCzkcDIty7j36GB6mMoBoEKX+t1L71qCMDw1Fn2Q==}
 
   prettier-plugin-packagejson@3.0.2:
     resolution: {integrity: sha512-kmoj3hEynXwoHDo8ZhmWAIjRBoQWCDUVackiWfSDWdgD0rS3LGB61T9zoVbume/cotYdCoadUh4sqViAmXvpBQ==}
@@ -5970,7 +5970,7 @@ snapshots:
 
   prelude-ls@1.2.1: {}
 
-  prettier-plugin-marko@4.0.10:
+  prettier-plugin-marko@4.1.0:
     dependencies:
       htmljs-parser: 5.14.0