diff --git a/webapp/IronCalc/package-lock.json b/webapp/IronCalc/package-lock.json
index 0074378..d44ad66 100644
--- a/webapp/IronCalc/package-lock.json
+++ b/webapp/IronCalc/package-lock.json
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         "@types/node": {
           "optional": true
         },
-        "@vitest/browser": {
+        "@vitest/browser-playwright": {
+          "optional": true
+        },
+        "@vitest/browser-preview": {
+          "optional": true
+        },
+        "@vitest/browser-webdriverio": {
           "optional": true
         },
         "@vitest/ui": {
@@ -4770,6 +4788,118 @@
         }
       }
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+      "resolved": "https://registry.npmjs.org/@vitest/expect/-/expect-4.0.8.tgz",
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+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "@standard-schema/spec": "^1.0.0",
+        "@types/chai": "^5.2.2",
+        "@vitest/spy": "4.0.8",
+        "@vitest/utils": "4.0.8",
+        "chai": "^6.2.0",
+        "tinyrainbow": "^3.0.3"
+      },
+      "funding": {
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+      }
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+    "node_modules/vitest/node_modules/@vitest/mocker": {
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+      "resolved": "https://registry.npmjs.org/@vitest/mocker/-/mocker-4.0.8.tgz",
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+      "license": "MIT",
+      "dependencies": {
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+        "estree-walker": "^3.0.3",
+        "magic-string": "^0.30.21"
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+      "license": "MIT",
+      "funding": {
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+    "node_modules/vitest/node_modules/@vitest/utils": {
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+      "resolved": "https://registry.npmjs.org/@vitest/utils/-/utils-4.0.8.tgz",
+      "integrity": "sha512-pdk2phO5NDvEFfUTxcTP8RFYjVj/kfLSPIN5ebP2Mu9kcIMeAQTbknqcFEyBcC4z2pJlJI9aS5UQjcYfhmKAow==",
+      "dev": true,
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+      "license": "MIT",
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+    "node_modules/vitest/node_modules/estree-walker": {
+      "version": "3.0.3",
+      "resolved": "https://registry.npmjs.org/estree-walker/-/estree-walker-3.0.3.tgz",
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+      }
+    },
+    "node_modules/vitest/node_modules/tinyrainbow": {
+      "version": "3.0.3",
+      "resolved": "https://registry.npmjs.org/tinyrainbow/-/tinyrainbow-3.0.3.tgz",
+      "integrity": "sha512-PSkbLUoxOFRzJYjjxHJt9xro7D+iilgMX/C9lawzVuYiIdcihh9DXmVibBe8lmcFrRi/VzlPjBxbN7rH24q8/Q==",
+      "dev": true,
+      "license": "MIT",
+      "engines": {
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+      }
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diff --git a/webapp/IronCalc/package.json b/webapp/IronCalc/package.json
index 271d55c..37d4efe 100644
--- a/webapp/IronCalc/package.json
+++ b/webapp/IronCalc/package.json
@@ -35,9 +35,9 @@
     "storybook": "^10.0.7",
     "ts-node": "^10.9.2",
     "typescript": "~5.9.3",
-    "vite": "^6.3.5",
-    "vite-plugin-svgr": "^4.2.0",
-    "vitest": "^3.2.2"
+    "vite": "^7.2.2",
+    "vite-plugin-svgr": "^4.5.0",
+    "vitest": "^4.0.8"
   },
   "peerDependencies": {
     "@types/react": "^18.0.0 || ^19.2.0",