diff --git a/pnpm-lock.yaml b/pnpm-lock.yaml
index fe22c5718..b51d729ca 100644
--- a/pnpm-lock.yaml
+++ b/pnpm-lock.yaml
@@ -365,8 +365,8 @@ importers:
         specifier: ^5.2.9
         version: 5.2.9(svelte@5.43.4)(vite@7.2.2(@types/node@25.0.3)(jiti@1.21.7)(terser@5.44.1)(yaml@2.8.2))(vitest@4.0.8)
       '@vitest/coverage-v8':
-        specifier: ^4.0.8
-        version: 4.0.8(vitest@4.0.8)
+        specifier: ^4.0.16
+        version: 4.0.16(vitest@4.0.8)
       '@vitest/expect':
         specifier: ^4.0.8
         version: 4.0.8
@@ -2652,11 +2652,11 @@ packages:
     peerDependencies:
       vite: ^4.2.0 || ^5.0.0 || ^6.0.0 || ^7.0.0
 
-  '@vitest/coverage-v8@4.0.8':
-    resolution: {integrity: sha512-wQgmtW6FtPNn4lWUXi8ZSYLpOIb92j3QCujxX3sQ81NTfQ/ORnE0HtK7Kqf2+7J9jeveMGyGyc4NWc5qy3rC4A==}
+  '@vitest/coverage-v8@4.0.16':
+    resolution: {integrity: sha512-2rNdjEIsPRzsdu6/9Eq0AYAzYdpP6Bx9cje9tL3FE5XzXRQF1fNU9pe/1yE8fCrS0HD+fBtt6gLPh6LI57tX7A==}
     peerDependencies:
-      '@vitest/browser': 4.0.8
-      vitest: 4.0.8
+      '@vitest/browser': 4.0.16
+      vitest: 4.0.16
     peerDependenciesMeta:
       '@vitest/browser':
         optional: true
@@ -2973,8 +2973,8 @@ packages:
     resolution: {integrity: sha512-Izi8RQcffqCeNVgFigKli1ssklIbpHnCYc6AknXGYoB6grJqyeby7jv12JUQgmTAnIDnbck1uxksT4dzN3PWBA==}
     engines: {node: '>=12'}
 
-  ast-v8-to-istanbul@0.3.8:
-    resolution: {integrity: sha512-szgSZqUxI5T8mLKvS7WTjF9is+MVbOeLADU73IseOcrqhxr/VAvy6wfoVE39KnKzA7JRhjF5eUagNlHwvZPlKQ==}
+  ast-v8-to-istanbul@0.3.10:
+    resolution: {integrity: sha512-p4K7vMz2ZSk3wN8l5o3y2bJAoZXT3VuJI5OLTATY/01CYWumWvwkUw0SqDBnNq6IiTO3qDa1eSQDibAV8g7XOQ==}
 
   astral-regex@2.0.0:
     resolution: {integrity: sha512-Z7tMw1ytTXt5jqMcOP+OQteU1VuNK9Y02uuJtKQ1Sv69jXQKKg5cibLwGJow8yzZP+eAc18EmLGPal0bp36rvQ==}
@@ -7993,10 +7993,12 @@ packages:
   whatwg-encoding@2.0.0:
     resolution: {integrity: sha512-p41ogyeMUrw3jWclHWTQg1k05DSVXPLcVxRTYsXUk+ZooOCZLcoYgPZ/HL/D/N+uQPOtcp1me1WhBEaX02mhWg==}
     engines: {node: '>=12'}
+    deprecated: Use @exodus/bytes instead for a more spec-conformant and faster implementation
 
   whatwg-encoding@3.1.1:
     resolution: {integrity: sha512-6qN4hJdMwfYBtE3YBTTHhoeuUrDBPZmbQaxWAqSALV/MeEnR5z1xd8UKud2RAkFoPkmB+hli1TZSnyi84xz1vQ==}
     engines: {node: '>=18'}
+    deprecated: Use @exodus/bytes instead for a more spec-conformant and faster implementation
 
   whatwg-mimetype@3.0.0:
     resolution: {integrity: sha512-nt+N2dzIutVRxARx1nghPKGv1xHikU7HKdfafKkLNLindmPU/ch3U31NOCGGA/dmPcmb1VlofO0vnKAcsm0o/Q==}
@@ -10757,17 +10759,17 @@ snapshots:
     transitivePeerDependencies:
       - supports-color
 
-  '@vitest/coverage-v8@4.0.8(vitest@4.0.8)':
+  '@vitest/coverage-v8@4.0.16(vitest@4.0.8)':
     dependencies:
       '@bcoe/v8-coverage': 1.0.2
-      '@vitest/utils': 4.0.8
-      ast-v8-to-istanbul: 0.3.8
-      debug: 4.4.3(supports-color@8.1.1)
+      '@vitest/utils': 4.0.16
+      ast-v8-to-istanbul: 0.3.10
       istanbul-lib-coverage: 3.2.2
       istanbul-lib-report: 3.0.1
       istanbul-lib-source-maps: 5.0.6
       istanbul-reports: 3.2.0
       magicast: 0.5.1
+      obug: 2.1.1
       std-env: 3.10.0
       tinyrainbow: 3.0.3
       vitest: 4.0.8(@types/debug@4.1.12)(@types/node@25.0.3)(@vitest/ui@4.0.8)(happy-dom@16.8.1)(jiti@1.21.7)(jsdom@26.1.0)(terser@5.44.1)(yaml@2.8.2)
@@ -11159,7 +11161,7 @@ snapshots:
 
   assertion-error@2.0.1: {}
 
-  ast-v8-to-istanbul@0.3.8:
+  ast-v8-to-istanbul@0.3.10:
     dependencies:
       '@jridgewell/trace-mapping': 0.3.31
       estree-walker: 3.0.3
diff --git a/test/unit/package.json b/test/unit/package.json
index 768fc73e5..51e9fa113 100644
--- a/test/unit/package.json
+++ b/test/unit/package.json
@@ -20,7 +20,7 @@
     "@sveltejs/vite-plugin-svelte": "^6.2.1",
     "@testing-library/jest-dom": "^6.4.8",
     "@testing-library/svelte": "^5.2.9",
-    "@vitest/coverage-v8": "^4.0.8",
+    "@vitest/coverage-v8": "^4.0.16",
     "@vitest/expect": "^4.0.8",
     "autoprefixer": "^10.4.22",
     "del": "^7.1.0",