diff --git a/frontend/ic_vetkeys/package.json b/frontend/ic_vetkeys/package.json
index 1163c132..b5a8f0e0 100644
--- a/frontend/ic_vetkeys/package.json
+++ b/frontend/ic_vetkeys/package.json
@@ -71,7 +71,7 @@
         "eslint-config-prettier": "^10.1.5",
         "eslint-plugin-prettier": "^5.2.6",
         "fake-indexeddb": "^6.0.0",
-        "happy-dom": "^18.0.1",
+        "happy-dom": "^20.0.2",
         "isomorphic-fetch": "3.0.0",
         "prettier": "^3.5.3",
         "typedoc": "^0.28.3",
diff --git a/package-lock.json b/package-lock.json
index 23959bbf..6d069434 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -30,7 +30,7 @@
                 "eslint-config-prettier": "^10.1.5",
                 "eslint-plugin-prettier": "^5.2.6",
                 "fake-indexeddb": "^6.0.0",
-                "happy-dom": "^18.0.1",
+                "happy-dom": "^20.0.2",
                 "isomorphic-fetch": "3.0.0",
                 "prettier": "^3.5.3",
                 "typedoc": "^0.28.3",
@@ -3259,9 +3259,9 @@
             "license": "MIT"
         },
         "node_modules/happy-dom": {
-            "version": "18.0.1",
-            "resolved": "https://registry.npmjs.org/happy-dom/-/happy-dom-18.0.1.tgz",
-            "integrity": "sha512-qn+rKOW7KWpVTtgIUi6RVmTBZJSe2k0Db0vh1f7CWrWclkkc7/Q+FrOfkZIb2eiErLyqu5AXEzE7XthO9JVxRA==",
+            "version": "20.0.2",
+            "resolved": "https://registry.npmjs.org/happy-dom/-/happy-dom-20.0.2.tgz",
+            "integrity": "sha512-pYOyu624+6HDbY+qkjILpQGnpvZOusItCk+rvF5/V+6NkcgTKnbOldpIy22tBnxoaLtlM9nXgoqAcW29/B7CIw==",
             "dev": true,
             "license": "MIT",
             "dependencies": {