diff --git a/backend/package-lock.json b/backend/package-lock.json
index 657209c3a..bb805ed35 100644
--- a/backend/package-lock.json
+++ b/backend/package-lock.json
@@ -34,7 +34,7 @@
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-        "@vitest/coverage-v8": "^4.0.0",
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-        "vitest": "^4.0.0"
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       "dev": true,
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         "url": "https://github.com/sponsors/oxc-project"
       }
@@ -2311,6 +2312,7 @@
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@@ -2328,6 +2330,7 @@
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@@ -2345,6 +2348,7 @@
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@@ -2362,6 +2366,7 @@
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@@ -2379,6 +2384,7 @@
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@@ -2396,6 +2402,7 @@
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@@ -2416,6 +2423,7 @@
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@@ -2436,6 +2444,7 @@
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@@ -2456,6 +2465,7 @@
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@@ -2476,6 +2486,7 @@
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@@ -2496,6 +2507,7 @@
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@@ -2516,6 +2528,7 @@
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@@ -2533,6 +2546,7 @@
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@@ -2550,6 +2564,7 @@
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@@ -2567,6 +2582,7 @@
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@@ -2576,7 +2592,8 @@
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-      "license": "MIT"
+      "license": "MIT",
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-        "obug": "^2.1.1",
-        "std-env": "^4.0.0-rc.1",
-        "tinyrainbow": "^3.1.0"
+        "@vitest/istanbul-lib-coverage": "^1.0.0",
+        "@vitest/istanbul-lib-report": "^1.0.0",
+        "ast-v8-to-istanbul": "^1.0.5",
+        "magicast": "^0.5.4",
+        "obug": "^2.1.4",
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-        "vitest": "4.1.11"
+        "@vitest/browser": "5.0.0",
+        "vitest": "5.0.0"
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@@ -3788,34 +3803,40 @@
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+      "dev": true,
+      "license": "MIT",
+      "engines": {
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+    "node_modules/@vitest/istanbul-lib-report": {
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-        "chai": "^6.2.2",
-        "tinyrainbow": "^3.1.0"
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-      "funding": {
-        "url": "https://opencollective.com/vitest"
+      "engines": {
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-      "resolved": "https://registry.npmjs.org/@vitest/mocker/-/mocker-4.1.11.tgz",
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@@ -3833,94 +3854,26 @@
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@@ -5396,13 +5349,6 @@
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       "dev": true,
       "license": "Apache-2.0",
+      "peer": true,
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@@ -6983,6 +6930,7 @@
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@@ -7321,13 +7269,6 @@
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@@ -7608,45 +7549,6 @@
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@@ -7863,6 +7766,7 @@
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@@ -7884,6 +7788,7 @@
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@@ -7905,6 +7810,7 @@
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@@ -7926,6 +7832,7 @@
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+      "peer": true,
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@@ -7947,6 +7854,7 @@
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@@ -7971,6 +7879,7 @@
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@@ -7995,6 +7904,7 @@
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@@ -8019,6 +7929,7 @@
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@@ -8043,6 +7954,7 @@
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@@ -8064,6 +7976,7 @@
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@@ -8085,6 +7998,7 @@
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@@ -8320,22 +8234,6 @@
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@@ -8622,6 +8520,7 @@
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@@ -9285,6 +9184,7 @@
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-        "tinyrainbow": "^3.1.0",
-        "vite": "^6.0.0 || ^7.0.0 || ^8.0.0",
+        "@types/chai": "^5.2.2",
+        "@vitest/mocker": "5.0.0",
+        "chai": "^6.2.2",
+        "es-module-lexer": "^2.3.2",
+        "expect-type": "^1.4.0",
+        "magic-string": "^1.2.3",
+        "obug": "^2.1.4",
+        "picomatch": "^4.0.7",
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+        "tinybench": "6.1.4",
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+        "node": "^22.12.0 || ^24.0.0 || >=26.0.0"
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@@ -11359,16 +11248,16 @@
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-        "@vitest/coverage-istanbul": "4.1.11",
-        "@vitest/coverage-v8": "4.1.11",
-        "@vitest/ui": "4.1.11",
+        "@types/node": "^22.0.0 || >=24.0.0",
+        "@vitest/browser-playwright": "5.0.0",
+        "@vitest/browser-preview": "5.0.0",
+        "@vitest/browser-webdriverio": "^5.0.0-beta.5 || >=5.0.0",
+        "@vitest/coverage-istanbul": "5.0.0",
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         "jsdom": "*",
-        "vite": "^6.0.0 || ^7.0.0 || ^8.0.0"
+        "vite": "^6.4.0 || ^7.0.0 || ^8.0.0"
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@@ -11410,15 +11299,38 @@
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+      "resolved": "https://registry.npmjs.org/picomatch/-/picomatch-4.0.7.tgz",
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+      "license": "MIT",
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diff --git a/backend/package.json b/backend/package.json
index ca972320b..1ea08cf2b 100644
--- a/backend/package.json
+++ b/backend/package.json
@@ -54,7 +54,7 @@
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-    "@vitest/coverage-v8": "^4.0.0",
+    "@vitest/coverage-v8": "^5.0.0",
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@@ -67,7 +67,7 @@
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-    "vitest": "^4.0.0"
+    "vitest": "^5.0.0"
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diff --git a/frontend/package-lock.json b/frontend/package-lock.json
index 3898792a0..cf32cc702 100644
--- a/frontend/package-lock.json
+++ b/frontend/package-lock.json
@@ -32,8 +32,8 @@
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-        "@vitest/coverage-v8": "^4.0.0",
-        "@vitest/ui": "^4.0.0",
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-        "vitest": "^4.0.0"
+        "vitest": "^5.0.0"
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-        "obug": "^2.1.1",
-        "std-env": "^4.0.0-rc.1",
-        "tinyrainbow": "^3.1.0"
+        "@vitest/istanbul-lib-coverage": "^1.0.0",
+        "@vitest/istanbul-lib-report": "^1.0.0",
+        "ast-v8-to-istanbul": "^1.0.5",
+        "magicast": "^0.5.4",
+        "obug": "^2.1.4",
+        "std-env": "^4.2.0",
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-        "@vitest/browser": "4.1.11",
-        "vitest": "4.1.11"
+        "@vitest/browser": "5.0.0",
+        "vitest": "5.0.0"
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@@ -2662,34 +2653,40 @@
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+      "dev": true,
+      "license": "MIT",
+      "engines": {
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+    "node_modules/@vitest/istanbul-lib-report": {
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+      "resolved": "https://registry.npmjs.org/@vitest/mocker/-/mocker-5.0.0.tgz",
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-        "@vitest/spy": "4.1.11",
+        "@jridgewell/trace-mapping": "0.3.31",
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@@ -4449,45 +4418,6 @@
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-      "license": "BSD-3-Clause",
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@@ -4946,35 +4876,6 @@
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-      "license": "MIT",
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-      "funding": {
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-    "node_modules/make-dir/node_modules/semver": {
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-      "resolved": "https://registry.npmjs.org/semver/-/semver-7.8.5.tgz",
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-      "dev": true,
-      "license": "ISC",
-      "bin": {
-        "semver": "bin/semver.js"
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-      "engines": {
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@@ -6327,19 +6228,6 @@
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@@ -6398,20 +6286,13 @@
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-      "license": "MIT"
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-      "resolved": "https://registry.npmjs.org/tinyexec/-/tinyexec-1.3.1.tgz",
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+      "version": "6.1.4",
+      "resolved": "https://registry.npmjs.org/tinybench/-/tinybench-6.1.4.tgz",
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       "dev": true,
       "license": "MIT",
       "engines": {
-        "node": ">=18"
+        "node": ">=20.0.0"
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     "node_modules/tinyglobby": {
@@ -6817,38 +6698,31 @@
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-      "resolved": "https://registry.npmjs.org/vitest/-/vitest-4.1.11.tgz",
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+      "version": "5.0.0",
+      "resolved": "https://registry.npmjs.org/vitest/-/vitest-5.0.0.tgz",
+      "integrity": "sha512-gpsMNoRhMjMktVxPtstOH4/PJuPyovVaMDr4oDilXaGH1EcqM2OE96SoHT2VIQ6fTGtTjqmHDrEu2X9RQiXf8Q==",
       "dev": true,
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-        "@vitest/expect": "4.1.11",
-        "@vitest/mocker": "4.1.11",
-        "@vitest/pretty-format": "4.1.11",
-        "@vitest/runner": "4.1.11",
-        "@vitest/snapshot": "4.1.11",
-        "@vitest/spy": "4.1.11",
-        "@vitest/utils": "4.1.11",
-        "es-module-lexer": "^2.0.0",
-        "expect-type": "^1.3.0",
-        "magic-string": "^0.30.21",
-        "obug": "^2.1.1",
-        "pathe": "^2.0.3",
-        "picomatch": "^4.0.3",
-        "std-env": "^4.0.0-rc.1",
-        "tinybench": "^2.9.0",
-        "tinyexec": "^1.0.2",
-        "tinyglobby": "^0.2.15",
-        "tinyrainbow": "^3.1.0",
-        "vite": "^6.0.0 || ^7.0.0 || ^8.0.0",
+        "@types/chai": "^5.2.2",
+        "@vitest/mocker": "5.0.0",
+        "chai": "^6.2.2",
+        "es-module-lexer": "^2.3.2",
+        "expect-type": "^1.4.0",
+        "magic-string": "^1.2.3",
+        "obug": "^2.1.4",
+        "picomatch": "^4.0.7",
+        "std-env": "^4.2.0",
+        "tinybench": "6.1.4",
+        "tinyexec": "1.3.0",
+        "tinyglobby": "^0.2.17",
         "why-is-node-running": "^2.3.0"
       },
       "bin": {
         "vitest": "vitest.mjs"
       },
       "engines": {
-        "node": "^20.0.0 || ^22.0.0 || >=24.0.0"
+        "node": "^22.12.0 || ^24.0.0 || >=26.0.0"
       },
       "funding": {
         "url": "https://opencollective.com/vitest"
@@ -6856,16 +6730,16 @@
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         "@edge-runtime/vm": "*",
         "@opentelemetry/api": "^1.9.0",
-        "@types/node": "^20.0.0 || ^22.0.0 || >=24.0.0",
-        "@vitest/browser-playwright": "4.1.11",
-        "@vitest/browser-preview": "4.1.11",
-        "@vitest/browser-webdriverio": "4.1.11",
-        "@vitest/coverage-istanbul": "4.1.11",
-        "@vitest/coverage-v8": "4.1.11",
-        "@vitest/ui": "4.1.11",
+        "@types/node": "^22.0.0 || >=24.0.0",
+        "@vitest/browser-playwright": "5.0.0",
+        "@vitest/browser-preview": "5.0.0",
+        "@vitest/browser-webdriverio": "^5.0.0-beta.5 || >=5.0.0",
+        "@vitest/coverage-istanbul": "5.0.0",
+        "@vitest/coverage-v8": "5.0.0",
+        "@vitest/ui": "5.0.0",
         "happy-dom": "*",
         "jsdom": "*",
-        "vite": "^6.0.0 || ^7.0.0 || ^8.0.0"
+        "vite": "^6.4.0 || ^7.0.0 || ^8.0.0"
       },
       "peerDependenciesMeta": {
         "@edge-runtime/vm": {
@@ -6906,6 +6780,26 @@
         }
       }
     },
+    "node_modules/vitest/node_modules/magic-string": {
+      "version": "1.2.3",
+      "resolved": "https://registry.npmjs.org/magic-string/-/magic-string-1.2.3.tgz",
+      "integrity": "sha512-Bpb0W2TbLKOZ7vJnOUnVRGq3WL2p+ISV29M6hYPL1AFCpyKZpdr5ytiXoTSSxRVhg8YW7f65+6gbG8WG6PCa/g==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "@jridgewell/sourcemap-codec": "^1.5.5"
+      }
+    },
+    "node_modules/vitest/node_modules/tinyexec": {
+      "version": "1.3.0",
+      "resolved": "https://registry.npmjs.org/tinyexec/-/tinyexec-1.3.0.tgz",
+      "integrity": "sha512-QKAl9m8gWWGHV8jZcPeym6j+XULi6tOf1mT83WYJ4Lk2ytW/uwAWkrP0uFsdoYMdueVJ0qs26wZ+23xeB4ibNQ==",
+      "dev": true,
+      "license": "MIT",
+      "engines": {
+        "node": ">=18"
+      }
+    },
     "node_modules/w3c-xmlserializer": {
       "version": "5.0.0",
       "resolved": "https://registry.npmjs.org/w3c-xmlserializer/-/w3c-xmlserializer-5.0.0.tgz",
diff --git a/frontend/package.json b/frontend/package.json
index 68488f6c2..7dfb36d64 100644
--- a/frontend/package.json
+++ b/frontend/package.json
@@ -45,8 +45,8 @@
     "@testing-library/user-event": "^14.4.3",
     "@types/react": "^19.0.10",
     "@types/react-dom": "^19.0.4",
-    "@vitest/coverage-v8": "^4.0.0",
-    "@vitest/ui": "^4.0.0",
+    "@vitest/coverage-v8": "^5.0.0",
+    "@vitest/ui": "^5.0.0",
     "eslint": "^10.2.0",
     "eslint-config-prettier": "^10.1.8",
     "eslint-plugin-prettier": "^5.2.3",
@@ -56,7 +56,7 @@
     "sass": "^1.85.1",
     "typescript": "^6.0.0",
     "typescript-eslint": "^8.58.2",
-    "vitest": "^4.0.0"
+    "vitest": "^5.0.0"
   },
   "overrides": {
     "rollup@<4.22.4": "^4.22.4",