diff --git a/package-lock.json b/package-lock.json
index ddf74e62..7a86d99e 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -31,7 +31,7 @@
         "@vitejs/plugin-react": "^4.0.0",
         "acorn": "^8.14.0",
         "babel-loader": "^9.0.0",
-        "happy-dom": "^17.0.0",
+        "happy-dom": "^20.0.0",
         "jsdom": "^26.0.0",
         "react-test-renderer": "^19.0.0",
         "snazzy": "^9.0.0",
@@ -2154,6 +2154,16 @@
       "dev": true,
       "license": "MIT"
     },
+    "node_modules/@types/node": {
+      "version": "25.2.3",
+      "resolved": "https://registry.npmjs.org/@types/node/-/node-25.2.3.tgz",
+      "integrity": "sha512-m0jEgYlYz+mDJZ2+F4v8D1AyQb+QzsNqRuI7xg1VQX/KlKS0qT9r1Mo16yo5F/MtifXFgaofIFsdFMox2SxIbQ==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "undici-types": "~7.16.0"
+      }
+    },
     "node_modules/@types/normalize-package-data": {
       "version": "2.4.4",
       "resolved": "https://registry.npmjs.org/@types/normalize-package-data/-/normalize-package-data-2.4.4.tgz",
@@ -2188,6 +2198,23 @@
       "dev": true,
       "license": "MIT"
     },
+    "node_modules/@types/whatwg-mimetype": {
+      "version": "3.0.2",
+      "resolved": "https://registry.npmjs.org/@types/whatwg-mimetype/-/whatwg-mimetype-3.0.2.tgz",
+      "integrity": "sha512-c2AKvDT8ToxLIOUlN51gTiHXflsfIFisS4pO7pDPoKouJCESkhZnEy623gwP9laCy5lnLDAw1vAzu2vM2YLOrA==",
+      "dev": true,
+      "license": "MIT"
+    },
+    "node_modules/@types/ws": {
+      "version": "8.18.1",
+      "resolved": "https://registry.npmjs.org/@types/ws/-/ws-8.18.1.tgz",
+      "integrity": "sha512-ThVF6DCVhA8kUGy+aazFQ4kXQ7E1Ty7A3ypFOe0IcJV8O/M511G99AW24irKrW56Wt44yG9+ij8FaqoBGkuBXg==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "@types/node": "*"
+      }
+    },
     "node_modules/@vitejs/plugin-react": {
       "version": "4.3.4",
       "resolved": "https://registry.npmjs.org/@vitejs/plugin-react/-/plugin-react-4.3.4.tgz",
@@ -5300,17 +5327,34 @@
       "dev": true
     },
     "node_modules/happy-dom": {
-      "version": "17.1.1",
-      "resolved": "https://registry.npmjs.org/happy-dom/-/happy-dom-17.1.1.tgz",
-      "integrity": "sha512-OSTkBlmD/6Do7gCd7nZB5iFq1bF9VQg/iFmjHmxvVX2S1UiOpo6sT+aFNnu3XUsB8hCZb9+GZ0G1g1TaMiAggw==",
+      "version": "20.6.1",
+      "resolved": "https://registry.npmjs.org/happy-dom/-/happy-dom-20.6.1.tgz",
+      "integrity": "sha512-+0vhESXXhFwkdjZnJ5DlmJIfUYGgIEEjzIjB+aKJbFuqlvvKyOi+XkI1fYbgYR9QCxG5T08koxsQ6HrQfa5gCQ==",
       "dev": true,
       "license": "MIT",
       "dependencies": {
-        "webidl-conversions": "^7.0.0",
-        "whatwg-mimetype": "^3.0.0"
+        "@types/node": ">=20.0.0",
+        "@types/whatwg-mimetype": "^3.0.2",
+        "@types/ws": "^8.18.1",
+        "entities": "^6.0.1",
+        "whatwg-mimetype": "^3.0.0",
+        "ws": "^8.18.3"
       },
       "engines": {
-        "node": ">=18.0.0"
+        "node": ">=20.0.0"
+      }
+    },
+    "node_modules/happy-dom/node_modules/entities": {
+      "version": "6.0.1",
+      "resolved": "https://registry.npmjs.org/entities/-/entities-6.0.1.tgz",
+      "integrity": "sha512-aN97NXWF6AWBTahfVOIrB/NShkzi5H7F9r1s9mD3cDj4Ko5f2qhhVoYMibXF7GlLveb/D2ioWay8lxI97Ven3g==",
+      "dev": true,
+      "license": "BSD-2-Clause",
+      "engines": {
+        "node": ">=0.12"
+      },
+      "funding": {
+        "url": "https://github.com/fb55/entities?sponsor=1"
       }
     },
     "node_modules/hard-rejection": {
@@ -9369,6 +9413,13 @@
         "url": "https://github.com/sponsors/ljharb"
       }
     },
+    "node_modules/undici-types": {
+      "version": "7.16.0",
+      "resolved": "https://registry.npmjs.org/undici-types/-/undici-types-7.16.0.tgz",
+      "integrity": "sha512-Zz+aZWSj8LE6zoxD+xrjh4VfkIG8Ya6LvYkZqtUQGJPZjYl53ypCaUwWqo7eI0x66KBGeRo+mlBEkMSeSZ38Nw==",
+      "dev": true,
+      "license": "MIT"
+    },
     "node_modules/unicorn-magic": {
       "version": "0.1.0",
       "resolved": "https://registry.npmjs.org/unicorn-magic/-/unicorn-magic-0.1.0.tgz",
@@ -9942,9 +9993,9 @@
       "license": "ISC"
     },
     "node_modules/ws": {
-      "version": "8.18.0",
-      "resolved": "https://registry.npmjs.org/ws/-/ws-8.18.0.tgz",
-      "integrity": "sha512-8VbfWfHLbbwu3+N6OKsOMpBdT4kXPDDB9cJk2bJ6mh9ucxdlnNvH1e+roYkKmN9Nxw2yjz7VzeO9oOz2zJ04Pw==",
+      "version": "8.19.0",
+      "resolved": "https://registry.npmjs.org/ws/-/ws-8.19.0.tgz",
+      "integrity": "sha512-blAT2mjOEIi0ZzruJfIhb3nps74PRWTCz1IjglWEEpQl5XS/UNama6u2/rjFkDDouqr4L67ry+1aGIALViWjDg==",
       "dev": true,
       "license": "MIT",
       "engines": {
diff --git a/package.json b/package.json
index 3ec77966..d62bcf1e 100644
--- a/package.json
+++ b/package.json
@@ -44,7 +44,7 @@
     "@vitejs/plugin-react": "^4.0.0",
     "acorn": "^8.14.0",
     "babel-loader": "^9.0.0",
-    "happy-dom": "^17.0.0",
+    "happy-dom": "^20.0.0",
     "jsdom": "^26.0.0",
     "react-test-renderer": "^19.0.0",
     "snazzy": "^9.0.0",