diff --git a/.changeset/sour-turtles-tap.md b/.changeset/sour-turtles-tap.md
new file mode 100644
index 000000000000..2ec36ecbfd1e
--- /dev/null
+++ b/.changeset/sour-turtles-tap.md
@@ -0,0 +1,5 @@
+---
+'@astrojs/svelte': patch
+---
+
+Update to svelte2tsx 0.6.15 and vite-plugin-svelte 2.4.1
diff --git a/packages/integrations/svelte/package.json b/packages/integrations/svelte/package.json
index 85023e340886..61d9595370d0 100644
--- a/packages/integrations/svelte/package.json
+++ b/packages/integrations/svelte/package.json
@@ -38,18 +38,18 @@
     "dev": "astro-scripts dev \"src/**/*.ts\""
   },
   "dependencies": {
-    "@sveltejs/vite-plugin-svelte": "^2.1.1",
-    "svelte2tsx": "^0.5.11"
+    "@sveltejs/vite-plugin-svelte": "^2.4.1",
+    "svelte2tsx": "^0.6.15"
   },
   "devDependencies": {
     "astro": "workspace:*",
     "astro-scripts": "workspace:*",
-    "svelte": "^3.54.0",
+    "svelte": "^3.55.0",
     "vite": "^4.3.1"
   },
   "peerDependencies": {
     "astro": "workspace:^2.6.1",
-    "svelte": "^3.54.0"
+    "svelte": "^3.55.0"
   },
   "engines": {
     "node": ">=16.12.0"
diff --git a/packages/integrations/svelte/src/editor.cts b/packages/integrations/svelte/src/editor.cts
index c14f082b1505..2d426cf1bbd3 100644
--- a/packages/integrations/svelte/src/editor.cts
+++ b/packages/integrations/svelte/src/editor.cts
@@ -10,7 +10,7 @@ export function toTSX(code: string, className: string): string {
 		let tsx = svelte2tsx(code, { mode: 'ts' }).code;
 		tsx = '/// <reference types="svelte2tsx/svelte-shims" />\n' + tsx;
 		result = tsx.replace(
-			'export default class extends __sveltets_1_createSvelte2TsxComponent(',
+			'export default class extends __sveltets_2_createSvelte2TsxComponent(',
 			`export default function ${className}__AstroComponent_(_props: typeof Component.props): any {}\nlet Component = `
 		);
 	} catch (e: any) {
diff --git a/pnpm-lock.yaml b/pnpm-lock.yaml
index 12893221b758..a6f92fd05cee 100644
--- a/pnpm-lock.yaml
+++ b/pnpm-lock.yaml
@@ -4752,11 +4752,11 @@ importers:
   packages/integrations/svelte:
     dependencies:
       '@sveltejs/vite-plugin-svelte':
-        specifier: ^2.1.1
-        version: 2.1.1(svelte@3.58.0)(vite@4.3.1)
+        specifier: ^2.4.1
+        version: 2.4.1(svelte@3.58.0)(vite@4.3.1)
       svelte2tsx:
-        specifier: ^0.5.11
-        version: 0.5.11(svelte@3.58.0)(typescript@5.0.2)
+        specifier: ^0.6.15
+        version: 0.6.15(svelte@3.58.0)(typescript@5.0.2)
     devDependencies:
       astro:
         specifier: workspace:*
@@ -4765,7 +4765,7 @@ importers:
         specifier: workspace:*
         version: link:../../../scripts
       svelte:
-        specifier: ^3.54.0
+        specifier: ^3.55.0
         version: 3.58.0
       vite:
         specifier: ^4.3.1
@@ -8582,16 +8582,36 @@ packages:
       string.prototype.matchall: 4.0.8
     dev: false
 
-  /@sveltejs/vite-plugin-svelte@2.1.1(svelte@3.58.0)(vite@4.3.1):
-    resolution: {integrity: sha512-7YeBDt4us0FiIMNsVXxyaP4Hwyn2/v9x3oqStkHU3ZdIc5O22pGwUwH33wUqYo+7Itdmo8zxJ45Qvfm3H7UUjQ==}
+  /@sveltejs/vite-plugin-svelte-inspector@1.0.2(@sveltejs/vite-plugin-svelte@2.4.1)(svelte@3.58.0)(vite@4.3.1):
+    resolution: {integrity: sha512-Cy1dUMcYCnDVV/hPLXa43YZJ2jGKVW5rA0xuNL9dlmYhT0yoS1g7+FOFSRlgk0BXKk/Oc7grs+8BVA5Iz2fr8A==}
+    engines: {node: ^14.18.0 || >= 16}
+    peerDependencies:
+      '@sveltejs/vite-plugin-svelte': ^2.2.0
+      svelte: ^3.54.0 || ^4.0.0-next.0
+      vite: ^4.0.0
+    peerDependenciesMeta:
+      vite:
+        optional: true
+    dependencies:
+      '@sveltejs/vite-plugin-svelte': 2.4.1(svelte@3.58.0)(vite@4.3.1)
+      debug: 4.3.4
+      svelte: 3.58.0
+      vite: 4.3.1(@types/node@18.16.3)(sass@1.52.2)
+    transitivePeerDependencies:
+      - supports-color
+    dev: false
+
+  /@sveltejs/vite-plugin-svelte@2.4.1(svelte@3.58.0)(vite@4.3.1):
+    resolution: {integrity: sha512-bNNKvoRY89ptY7udeBSCmTdCVwkjmMcZ0j/z9J5MuedT8jPjq0zrknAo/jF1sToAza4NVaAgR9AkZoD9oJJmnA==}
     engines: {node: ^14.18.0 || >= 16}
     peerDependencies:
-      svelte: ^3.54.0
+      svelte: ^3.54.0 || ^4.0.0-next.0
       vite: ^4.0.0
     peerDependenciesMeta:
       vite:
         optional: true
     dependencies:
+      '@sveltejs/vite-plugin-svelte-inspector': 1.0.2(@sveltejs/vite-plugin-svelte@2.4.1)(svelte@3.58.0)(vite@4.3.1)
       debug: 4.3.4
       deepmerge: 4.3.1
       kleur: 4.1.5
@@ -16764,11 +16784,11 @@ packages:
       svelte: 3.58.0
     dev: false
 
-  /svelte2tsx@0.5.11(svelte@3.58.0)(typescript@5.0.2):
-    resolution: {integrity: sha512-Is95G1wqNvEUJZ9DITRS2zfMwVJRZztMduPs1vJJ0cm65WUg/avBl5vBXjHycQL/qmFpaqa3NG4qWnf7bCHPag==}
+  /svelte2tsx@0.6.15(svelte@3.58.0)(typescript@5.0.2):
+    resolution: {integrity: sha512-+j6RmA3g5pPs1DHa/rdzJjjhZuCfWx0IbNPaR99A2bvOSPPY6BlVkBGU0urI+DGcWHhYEG28Flo942KqlAkpEQ==}
     peerDependencies:
-      svelte: ^3.24
-      typescript: ^4.1.2
+      svelte: ^3.55 || ^4.0
+      typescript: ^4.9.4 || ^5.0.0
     peerDependenciesMeta:
       typescript:
         optional: true