diff --git a/plugins/promptfoo/package-lock.json b/plugins/promptfoo/package-lock.json
index 9c41eb3..934726d 100644
--- a/plugins/promptfoo/package-lock.json
+++ b/plugins/promptfoo/package-lock.json
@@ -19,7 +19,7 @@
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         "@types/ws": "^8.5.0",
         "typescript": "^6.0.0",
-        "vitest": "^4.0.18"
+        "vitest": "^5.0.0"
       },
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         "node": ">=20.0.0"
@@ -32,6 +32,7 @@
       "dev": true,
       "license": "MIT",
       "optional": true,
+      "peer": true,
       "dependencies": {
         "@emnapi/wasi-threads": "1.2.1",
         "tslib": "^2.4.0"
@@ -44,6 +45,7 @@
       "dev": true,
       "license": "MIT",
       "optional": true,
+      "peer": true,
       "dependencies": {
         "tslib": "^2.4.0"
       }
@@ -55,10 +57,21 @@
       "dev": true,
       "license": "MIT",
       "optional": true,
+      "peer": true,
       "dependencies": {
         "tslib": "^2.4.0"
       }
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+      "resolved": "https://registry.npmjs.org/@jridgewell/resolve-uri/-/resolve-uri-3.1.2.tgz",
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+      "dev": true,
+      "license": "MIT",
+      "engines": {
+        "node": ">=6.0.0"
+      }
+    },
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       "resolved": "https://registry.npmjs.org/@jridgewell/sourcemap-codec/-/sourcemap-codec-1.5.5.tgz",
@@ -66,6 +79,17 @@
       "dev": true,
       "license": "MIT"
     },
+    "node_modules/@jridgewell/trace-mapping": {
+      "version": "0.3.31",
+      "resolved": "https://registry.npmjs.org/@jridgewell/trace-mapping/-/trace-mapping-0.3.31.tgz",
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+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
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+        "@jridgewell/sourcemap-codec": "^1.4.14"
+      }
+    },
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       "resolved": "https://registry.npmjs.org/@napi-rs/wasm-runtime/-/wasm-runtime-1.1.4.tgz",
@@ -73,6 +97,7 @@
       "dev": true,
       "license": "MIT",
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+      "peer": true,
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       "dev": true,
       "license": "MIT",
+      "peer": true,
       "funding": {
         "url": "https://github.com/sponsors/Boshen"
       }
@@ -108,6 +134,7 @@
       "os": [
         "android"
       ],
+      "peer": true,
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       }
@@ -125,6 +152,7 @@
       "os": [
         "darwin"
       ],
+      "peer": true,
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         "node": "^20.19.0 || >=22.12.0"
       }
@@ -142,6 +170,7 @@
       "os": [
         "darwin"
       ],
+      "peer": true,
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         "node": "^20.19.0 || >=22.12.0"
       }
@@ -159,6 +188,7 @@
       "os": [
         "freebsd"
       ],
+      "peer": true,
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       }
@@ -176,6 +206,7 @@
       "os": [
         "linux"
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+      "peer": true,
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       }
@@ -196,6 +227,7 @@
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@@ -216,6 +248,7 @@
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@@ -236,6 +269,7 @@
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@@ -256,6 +290,7 @@
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+      "peer": true,
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@@ -276,6 +311,7 @@
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+      "peer": true,
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@@ -296,6 +332,7 @@
       "os": [
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+      "peer": true,
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@@ -313,6 +350,7 @@
       "os": [
         "openharmony"
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+      "peer": true,
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       }
@@ -327,6 +365,7 @@
       "dev": true,
       "license": "MIT",
       "optional": true,
+      "peer": true,
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@@ -349,6 +388,7 @@
       "os": [
         "win32"
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+      "peer": true,
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       }
@@ -366,6 +406,7 @@
       "os": [
         "win32"
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-      "resolved": "https://registry.npmjs.org/@standard-schema/spec/-/spec-1.1.0.tgz",
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-      "dev": true,
-      "license": "MIT"
+      "license": "MIT",
+      "peer": true
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     "node_modules/@tybys/wasm-util": {
       "version": "0.10.2",
@@ -391,6 +426,7 @@
       "dev": true,
       "license": "MIT",
       "optional": true,
+      "peer": true,
       "dependencies": {
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@@ -440,34 +476,17 @@
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-      "resolved": "https://registry.npmjs.org/@vitest/expect/-/expect-4.1.7.tgz",
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-      "license": "MIT",
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-        "@types/chai": "^5.2.2",
-        "@vitest/spy": "4.1.7",
-        "@vitest/utils": "4.1.7",
-        "chai": "^6.2.2",
-        "tinyrainbow": "^3.1.0"
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     "node_modules/@vitest/mocker": {
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-      "resolved": "https://registry.npmjs.org/@vitest/mocker/-/mocker-4.1.7.tgz",
-      "integrity": "sha512-vY7nuamKgfvpA1Koa3oYIw/k7D6kZnpGyNMZW8loow2bsBYla1TFdqTaXncWdRn4pgwNs+90RhnXhJScDwQeJA==",
+      "version": "5.0.0",
+      "resolved": "https://registry.npmjs.org/@vitest/mocker/-/mocker-5.0.0.tgz",
+      "integrity": "sha512-66PGTMIiVJP3t4a5yxU9qPtf7MdTBs8jmToMvy+HVflB3Yy13WJZTtPePdvU+wjRV02SKK5doLbSA6o9pwOmiA==",
       "dev": true,
       "license": "MIT",
       "dependencies": {
-        "@vitest/spy": "4.1.7",
+        "@jridgewell/trace-mapping": "0.3.31",
+        "@vitest/spy": "5.0.0",
         "estree-walker": "^3.0.3",
-        "magic-string": "^0.30.21"
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         "url": "https://opencollective.com/vitest"
@@ -485,72 +504,24 @@
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+    "node_modules/@vitest/mocker/node_modules/@vitest/spy": {
+      "version": "5.0.0",
+      "resolved": "https://registry.npmjs.org/@vitest/spy/-/spy-5.0.0.tgz",
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+    "node_modules/@vitest/mocker/node_modules/magic-string": {
+      "version": "1.2.3",
+      "resolved": "https://registry.npmjs.org/magic-string/-/magic-string-1.2.3.tgz",
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-      "dev": true,
-      "license": "MIT",
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-    "node_modules/@vitest/utils": {
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-      "resolved": "https://registry.npmjs.org/@vitest/utils/-/utils-4.1.7.tgz",
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-        "tinyrainbow": "^3.1.0"
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-      "funding": {
-        "url": "https://opencollective.com/vitest"
+        "@jridgewell/sourcemap-codec": "^1.5.5"
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       "dev": true,
       "license": "Apache-2.0",
+      "peer": true,
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     "node_modules/es-module-lexer": {
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-      "resolved": "https://registry.npmjs.org/es-module-lexer/-/es-module-lexer-2.1.0.tgz",
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@@ -608,9 +573,9 @@
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       "dev": true,
       "license": "Apache-2.0",
       "engines": {
@@ -646,6 +611,7 @@
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+      "peer": true,
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@@ -656,6 +622,7 @@
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       "license": "MPL-2.0",
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@@ -693,6 +660,7 @@
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@@ -714,6 +682,7 @@
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@@ -735,6 +704,7 @@
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@@ -756,6 +726,7 @@
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@@ -777,6 +748,7 @@
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@@ -801,6 +773,7 @@
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@@ -849,6 +823,7 @@
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@@ -873,6 +848,7 @@
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@@ -894,6 +870,7 @@
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@@ -915,6 +892,7 @@
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@@ -923,16 +901,6 @@
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@@ -945,6 +913,7 @@
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-      "dev": true,
-      "license": "MIT"
+      "license": "MIT",
+      "engines": {
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-      "license": "ISC"
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@@ -1010,6 +976,7 @@
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@@ -1025,6 +992,7 @@
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       "dev": true,
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+      "peer": true,
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@@ -1066,6 +1034,7 @@
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       "license": "BSD-3-Clause",
+      "peer": true,
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@@ -1078,23 +1047,26 @@
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-      "resolved": "https://registry.npmjs.org/std-env/-/std-env-4.1.0.tgz",
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+      "resolved": "https://registry.npmjs.org/std-env/-/std-env-4.2.0.tgz",
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-      "resolved": "https://registry.npmjs.org/tinybench/-/tinybench-2.9.0.tgz",
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+      "version": "6.1.4",
+      "resolved": "https://registry.npmjs.org/tinybench/-/tinybench-6.1.4.tgz",
+      "integrity": "sha512-9APumHG7r4yOk4X4WlkmE71aZcv1gvin1czO3OQ1U9iJcFA5Ja/ygyb0vPOVHTthFozUYs8CLoLUlM8grb2lTQ==",
       "dev": true,
-      "license": "MIT"
+      "license": "MIT",
+      "engines": {
+        "node": ">=20.0.0"
+      }
     },
     "node_modules/tinyexec": {
-      "version": "1.2.2",
-      "resolved": "https://registry.npmjs.org/tinyexec/-/tinyexec-1.2.2.tgz",
-      "integrity": "sha512-M/Q0B2cp4K7kynaT/vnED1j8TlLY+Pp7C6Wl2bl/7u/F0mUVwdyOpwomQb8JpYLitHUssAJRmLZdMCGsrx7i+g==",
+      "version": "1.3.0",
+      "resolved": "https://registry.npmjs.org/tinyexec/-/tinyexec-1.3.0.tgz",
+      "integrity": "sha512-QKAl9m8gWWGHV8jZcPeym6j+XULi6tOf1mT83WYJ4Lk2ytW/uwAWkrP0uFsdoYMdueVJ0qs26wZ+23xeB4ibNQ==",
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@@ -1102,9 +1074,9 @@
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-      "resolved": "https://registry.npmjs.org/tinyglobby/-/tinyglobby-0.2.16.tgz",
-      "integrity": "sha512-pn99VhoACYR8nFHhxqix+uvsbXineAasWm5ojXoN8xEwK5Kd3/TrhNn1wByuD52UxWRLy8pu+kRMniEi6Eq9Zg==",
+      "version": "0.2.17",
+      "resolved": "https://registry.npmjs.org/tinyglobby/-/tinyglobby-0.2.17.tgz",
+      "integrity": "sha512-wXR/dYpcqKmfWpEdZjiKJOwCNFndD0DMnrW/cYjVGttEkBfVgcLFHoNrlj47mjOVic9yyNu65alsgF4NQyTa2g==",
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@@ -1118,23 +1090,14 @@
         "url": "https://github.com/sponsors/SuperchupuDev"
       }
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-    "node_modules/tinyrainbow": {
-      "version": "3.1.0",
-      "resolved": "https://registry.npmjs.org/tinyrainbow/-/tinyrainbow-3.1.0.tgz",
-      "integrity": "sha512-Bf+ILmBgretUrdJxzXM0SgXLZ3XfiaUuOj/IKQHuTXip+05Xn+uyEYdVg0kYDipTBcLrCVyUzAPz7QmArb0mmw==",
-      "dev": true,
-      "license": "MIT",
-      "engines": {
-        "node": ">=14.0.0"
-      }
-    },
     "node_modules/tslib": {
       "version": "2.8.1",
       "resolved": "https://registry.npmjs.org/tslib/-/tslib-2.8.1.tgz",
       "integrity": "sha512-oJFu94HQb+KVduSUQL7wnpmqnfmLsOA/nAh6b6EH0wCEoK0/mPeXU6c3wKDV83MkOuHPRHtSXKKU99IBazS/2w==",
       "dev": true,
       "license": "0BSD",
-      "optional": true
+      "optional": true,
+      "peer": true
     },
     "node_modules/typescript": {
       "version": "6.0.3",
@@ -1163,6 +1126,7 @@
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       "dev": true,
       "license": "MIT",
+      "peer": true,
       "dependencies": {
         "lightningcss": "^1.32.0",
         "picomatch": "^4.0.4",
@@ -1236,38 +1200,31 @@
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     "node_modules/vitest": {
-      "version": "4.1.7",
-      "resolved": "https://registry.npmjs.org/vitest/-/vitest-4.1.7.tgz",
-      "integrity": "sha512-flYyaFd2CgoCoU+0UKt3pxksgC+S02iTDN0n3LtqaMeXsI9SBcdNujc2k0DeFLzUn/0k538yNjOSdwgCqcrwJA==",
+      "version": "5.0.0",
+      "resolved": "https://registry.npmjs.org/vitest/-/vitest-5.0.0.tgz",
+      "integrity": "sha512-gpsMNoRhMjMktVxPtstOH4/PJuPyovVaMDr4oDilXaGH1EcqM2OE96SoHT2VIQ6fTGtTjqmHDrEu2X9RQiXf8Q==",
       "dev": true,
       "license": "MIT",
       "dependencies": {
-        "@vitest/expect": "4.1.7",
-        "@vitest/mocker": "4.1.7",
-        "@vitest/pretty-format": "4.1.7",
-        "@vitest/runner": "4.1.7",
-        "@vitest/snapshot": "4.1.7",
-        "@vitest/spy": "4.1.7",
-        "@vitest/utils": "4.1.7",
-        "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"
@@ -1275,16 +1232,16 @@
       "peerDependencies": {
         "@edge-runtime/vm": "*",
         "@opentelemetry/api": "^1.9.0",
-        "@types/node": "^20.0.0 || ^22.0.0 || >=24.0.0",
-        "@vitest/browser-playwright": "4.1.7",
-        "@vitest/browser-preview": "4.1.7",
-        "@vitest/browser-webdriverio": "4.1.7",
-        "@vitest/coverage-istanbul": "4.1.7",
-        "@vitest/coverage-v8": "4.1.7",
-        "@vitest/ui": "4.1.7",
+        "@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": {
@@ -1325,6 +1282,16 @@
         }
       }
     },
+    "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/why-is-node-running": {
       "version": "2.3.0",
       "resolved": "https://registry.npmjs.org/why-is-node-running/-/why-is-node-running-2.3.0.tgz",
diff --git a/plugins/promptfoo/package.json b/plugins/promptfoo/package.json
index 19e3f7f..bb0f993 100644
--- a/plugins/promptfoo/package.json
+++ b/plugins/promptfoo/package.json
@@ -23,7 +23,7 @@
     "@types/node": "^24.0.0",
     "@types/ws": "^8.5.0",
     "typescript": "^6.0.0",
-    "vitest": "^4.0.18"
+    "vitest": "^5.0.0"
   },
   "engines": {
     "node": ">=20.0.0"