diff --git a/packages/core/package.json b/packages/core/package.json
index 935c7f4e..08f5166c 100644
--- a/packages/core/package.json
+++ b/packages/core/package.json
@@ -41,7 +41,7 @@
   ],
   "devDependencies": {
     "@changesets/cli": "^2.27.1",
-    "@sveltejs/vite-plugin-svelte": "^3.0.1",
+    "@sveltejs/vite-plugin-svelte": "^6.0.0",
     "@types/cookie": "^0.6.0",
     "@types/fs-extra": "^11.0.4",
     "@types/node": "^24.0.0",
diff --git a/pnpm-lock.yaml b/pnpm-lock.yaml
index bdac72da..53eeeb4d 100644
--- a/pnpm-lock.yaml
+++ b/pnpm-lock.yaml
@@ -401,8 +401,8 @@ importers:
         specifier: ^2.27.1
         version: 2.29.8(@types/node@24.10.4)
       '@sveltejs/vite-plugin-svelte':
-        specifier: ^3.0.1
-        version: 3.1.2(svelte@4.2.20)(vite@7.3.0(@types/node@24.10.4)(lightningcss@1.30.1)(sass@1.81.0)(terser@5.36.0)(yaml@2.8.2))
+        specifier: ^6.0.0
+        version: 6.2.1(svelte@4.2.20)(vite@7.3.0(@types/node@24.10.4)(lightningcss@1.30.1)(sass@1.81.0)(terser@5.36.0)(yaml@2.8.2))
       '@types/cookie':
         specifier: ^0.6.0
         version: 0.6.0
@@ -1325,6 +1325,14 @@ packages:
       svelte: ^4.0.0 || ^5.0.0-next.0
       vite: ^5.0.0
 
+  '@sveltejs/vite-plugin-svelte-inspector@5.0.1':
+    resolution: {integrity: sha512-ubWshlMk4bc8mkwWbg6vNvCeT7lGQojE3ijDh3QTR6Zr/R+GXxsGbyH4PExEPpiFmqPhYiVSVmHBjUcVc1JIrA==}
+    engines: {node: ^20.19 || ^22.12 || >=24}
+    peerDependencies:
+      '@sveltejs/vite-plugin-svelte': ^6.0.0-next.0
+      svelte: ^5.0.0
+      vite: ^6.3.0 || ^7.0.0
+
   '@sveltejs/vite-plugin-svelte@3.1.2':
     resolution: {integrity: sha512-Txsm1tJvtiYeLUVRNqxZGKR/mI+CzuIQuc2gn+YCs9rMTowpNZ2Nqt53JdL8KF9bLhAf2ruR/dr9eZCwdTriRA==}
     engines: {node: ^18.0.0 || >=20}
@@ -1332,6 +1340,13 @@ packages:
       svelte: ^4.0.0 || ^5.0.0-next.0
       vite: ^5.0.0
 
+  '@sveltejs/vite-plugin-svelte@6.2.1':
+    resolution: {integrity: sha512-YZs/OSKOQAQCnJvM/P+F1URotNnYNeU3P2s4oIpzm1uFaqUEqRxUB0g5ejMjEb5Gjb9/PiBI5Ktrq4rUUF8UVQ==}
+    engines: {node: ^20.19 || ^22.12 || >=24}
+    peerDependencies:
+      svelte: ^5.0.0
+      vite: ^6.3.0 || ^7.0.0
+
   '@tsconfig/svelte@5.0.4':
     resolution: {integrity: sha512-BV9NplVgLmSi4mwKzD8BD/NQ8erOY/nUE/GpgWe2ckx+wIQF5RyRirn/QsSSCPeulVpc3RA/iJt6DpfTIZps0Q==}
 
@@ -2855,6 +2870,14 @@ packages:
       vite:
         optional: true
 
+  vitefu@1.1.1:
+    resolution: {integrity: sha512-B/Fegf3i8zh0yFbpzZ21amWzHmuNlLlmJT6n7bu5e+pCHUKQIfXSYokrqOBGEMMe9UG2sostKQF9mml/vYaWJQ==}
+    peerDependencies:
+      vite: ^3.0.0 || ^4.0.0 || ^5.0.0 || ^6.0.0 || ^7.0.0-beta.0
+    peerDependenciesMeta:
+      vite:
+        optional: true
+
   vitest@4.0.16:
     resolution: {integrity: sha512-E4t7DJ9pESL6E3I8nFjPa4xGUd3PmiWDLsDztS2qXSJWfHtbQnwAWylaBvSNY48I3vr8PTqIZlyK8TE3V3CA4Q==}
     engines: {node: ^20.0.0 || ^22.0.0 || >=24.0.0}
@@ -3681,9 +3704,9 @@ snapshots:
     transitivePeerDependencies:
       - supports-color
 
-  '@sveltejs/vite-plugin-svelte-inspector@2.1.0(@sveltejs/vite-plugin-svelte@3.1.2(svelte@4.2.20)(vite@7.3.0(@types/node@24.10.4)(lightningcss@1.30.1)(sass@1.81.0)(terser@5.36.0)(yaml@2.8.2)))(svelte@4.2.20)(vite@7.3.0(@types/node@24.10.4)(lightningcss@1.30.1)(sass@1.81.0)(terser@5.36.0)(yaml@2.8.2))':
+  '@sveltejs/vite-plugin-svelte-inspector@5.0.1(@sveltejs/vite-plugin-svelte@6.2.1(svelte@4.2.20)(vite@7.3.0(@types/node@24.10.4)(lightningcss@1.30.1)(sass@1.81.0)(terser@5.36.0)(yaml@2.8.2)))(svelte@4.2.20)(vite@7.3.0(@types/node@24.10.4)(lightningcss@1.30.1)(sass@1.81.0)(terser@5.36.0)(yaml@2.8.2))':
     dependencies:
-      '@sveltejs/vite-plugin-svelte': 3.1.2(svelte@4.2.20)(vite@7.3.0(@types/node@24.10.4)(lightningcss@1.30.1)(sass@1.81.0)(terser@5.36.0)(yaml@2.8.2))
+      '@sveltejs/vite-plugin-svelte': 6.2.1(svelte@4.2.20)(vite@7.3.0(@types/node@24.10.4)(lightningcss@1.30.1)(sass@1.81.0)(terser@5.36.0)(yaml@2.8.2))
       debug: 4.4.3
       svelte: 4.2.20
       vite: 7.3.0(@types/node@24.10.4)(lightningcss@1.30.1)(sass@1.81.0)(terser@5.36.0)(yaml@2.8.2)
@@ -3700,7 +3723,7 @@ snapshots:
       svelte: 4.2.20
       svelte-hmr: 0.16.0(svelte@4.2.20)
       vite: 5.4.21(@types/node@24.10.4)(lightningcss@1.30.1)(sass@1.81.0)(sugarss@4.0.1(postcss@8.5.6))(terser@5.36.0)
-      vitefu: 0.2.5(vite@5.4.21(@types/node@24.10.4)(lightningcss@1.30.1)(sass@1.81.0)(sugarss@4.0.1(postcss@8.5.6))(terser@5.36.0))
+      vitefu: 0.2.5(vite@5.4.21(@types/node@24.10.4)(lightningcss@1.30.1)(sass@1.81.0)(terser@5.36.0))
     transitivePeerDependencies:
       - supports-color
 
@@ -3718,17 +3741,15 @@ snapshots:
     transitivePeerDependencies:
       - supports-color
 
-  '@sveltejs/vite-plugin-svelte@3.1.2(svelte@4.2.20)(vite@7.3.0(@types/node@24.10.4)(lightningcss@1.30.1)(sass@1.81.0)(terser@5.36.0)(yaml@2.8.2))':
+  '@sveltejs/vite-plugin-svelte@6.2.1(svelte@4.2.20)(vite@7.3.0(@types/node@24.10.4)(lightningcss@1.30.1)(sass@1.81.0)(terser@5.36.0)(yaml@2.8.2))':
     dependencies:
-      '@sveltejs/vite-plugin-svelte-inspector': 2.1.0(@sveltejs/vite-plugin-svelte@3.1.2(svelte@4.2.20)(vite@7.3.0(@types/node@24.10.4)(lightningcss@1.30.1)(sass@1.81.0)(terser@5.36.0)(yaml@2.8.2)))(svelte@4.2.20)(vite@7.3.0(@types/node@24.10.4)(lightningcss@1.30.1)(sass@1.81.0)(terser@5.36.0)(yaml@2.8.2))
+      '@sveltejs/vite-plugin-svelte-inspector': 5.0.1(@sveltejs/vite-plugin-svelte@6.2.1(svelte@4.2.20)(vite@7.3.0(@types/node@24.10.4)(lightningcss@1.30.1)(sass@1.81.0)(terser@5.36.0)(yaml@2.8.2)))(svelte@4.2.20)(vite@7.3.0(@types/node@24.10.4)(lightningcss@1.30.1)(sass@1.81.0)(terser@5.36.0)(yaml@2.8.2))
       debug: 4.4.3
       deepmerge: 4.3.1
-      kleur: 4.1.5
       magic-string: 0.30.21
       svelte: 4.2.20
-      svelte-hmr: 0.16.0(svelte@4.2.20)
       vite: 7.3.0(@types/node@24.10.4)(lightningcss@1.30.1)(sass@1.81.0)(terser@5.36.0)(yaml@2.8.2)
-      vitefu: 0.2.5(vite@7.3.0(@types/node@24.10.4)(lightningcss@1.30.1)(sass@1.81.0)(terser@5.36.0)(yaml@2.8.2))
+      vitefu: 1.1.1(vite@7.3.0(@types/node@24.10.4)(lightningcss@1.30.1)(sass@1.81.0)(terser@5.36.0)(yaml@2.8.2))
     transitivePeerDependencies:
       - supports-color
 
@@ -5331,15 +5352,11 @@ snapshots:
       terser: 5.36.0
       yaml: 2.8.2
 
-  vitefu@0.2.5(vite@5.4.21(@types/node@24.10.4)(lightningcss@1.30.1)(sass@1.81.0)(sugarss@4.0.1(postcss@8.5.6))(terser@5.36.0)):
-    optionalDependencies:
-      vite: 5.4.21(@types/node@24.10.4)(lightningcss@1.30.1)(sass@1.81.0)(sugarss@4.0.1(postcss@8.5.6))(terser@5.36.0)
-
   vitefu@0.2.5(vite@5.4.21(@types/node@24.10.4)(lightningcss@1.30.1)(sass@1.81.0)(terser@5.36.0)):
     optionalDependencies:
       vite: 5.4.21(@types/node@24.10.4)(lightningcss@1.30.1)(sass@1.81.0)(sugarss@4.0.1(postcss@8.5.6))(terser@5.36.0)
 
-  vitefu@0.2.5(vite@7.3.0(@types/node@24.10.4)(lightningcss@1.30.1)(sass@1.81.0)(terser@5.36.0)(yaml@2.8.2)):
+  vitefu@1.1.1(vite@7.3.0(@types/node@24.10.4)(lightningcss@1.30.1)(sass@1.81.0)(terser@5.36.0)(yaml@2.8.2)):
     optionalDependencies:
       vite: 7.3.0(@types/node@24.10.4)(lightningcss@1.30.1)(sass@1.81.0)(terser@5.36.0)(yaml@2.8.2)
 
diff --git a/templates/express/package.json b/templates/express/package.json
index 7622b0fc..4134a69d 100644
--- a/templates/express/package.json
+++ b/templates/express/package.json
@@ -27,7 +27,7 @@
   },
   "devDependencies": {
     "@playwright/test": "^1.46.1",
-    "@sveltejs/vite-plugin-svelte": "^3.0.1",
+    "@sveltejs/vite-plugin-svelte": "^6.0.0",
     "@tsconfig/svelte": "^5.0.2",
     "@types/body-parser": "^1.19.5",
     "@types/compression": "^1.7.5",
diff --git a/templates/hono/package.json b/templates/hono/package.json
index fdb73f81..0477c12c 100644
--- a/templates/hono/package.json
+++ b/templates/hono/package.json
@@ -19,7 +19,7 @@
     "svelte": "^4.2.8"
   },
   "devDependencies": {
-    "@sveltejs/vite-plugin-svelte": "^3.0.1",
+    "@sveltejs/vite-plugin-svelte": "^6.0.0",
     "@tsconfig/svelte": "^5.0.2",
     "autoprefixer": "^10.4.20",
     "postcss": "^8.4.41",
diff --git a/templates/standalone/package.json b/templates/standalone/package.json
index 4ebab8fd..c5df522d 100644
--- a/templates/standalone/package.json
+++ b/templates/standalone/package.json
@@ -31,7 +31,7 @@
     "tailwindcss": "^4.1.11"
   },
   "devDependencies": {
-    "@sveltejs/vite-plugin-svelte": "^3.0.1",
+    "@sveltejs/vite-plugin-svelte": "^6.0.0",
     "@tsconfig/svelte": "^5.0.2",
     "@types/body-parser": "^1.19.5",
     "@types/compression": "^1.7.5",
diff --git a/templates/tailwindcss/package.json b/templates/tailwindcss/package.json
index 4917137a..d0384127 100644
--- a/templates/tailwindcss/package.json
+++ b/templates/tailwindcss/package.json
@@ -28,7 +28,7 @@
   },
   "devDependencies": {
     "@playwright/test": "^1.46.1",
-    "@sveltejs/vite-plugin-svelte": "^3.0.1",
+    "@sveltejs/vite-plugin-svelte": "^6.0.0",
     "@tsconfig/svelte": "^5.0.2",
     "@types/body-parser": "^1.19.5",
     "@types/compression": "^1.7.5",