diff --git a/frontend/package-lock.json b/frontend/package-lock.json
index 5a482fa..244276b 100644
--- a/frontend/package-lock.json
+++ b/frontend/package-lock.json
@@ -22,7 +22,7 @@
 				"eslint-plugin-svelte": "~3.11.*",
 				"eslint-plugin-vitest": "~0.5.*",
 				"globals": "~16.3.*",
-				"happy-dom": "~18.0.*",
+				"happy-dom": "~20.0.*",
 				"postcss": "~8.5.*",
 				"prettier": "~3.6.*",
 				"prettier-plugin-svelte": "~3.4.*",
@@ -1574,6 +1574,66 @@
 				"node": ">=14.0.0"
 			}
 		},
+		"node_modules/@tailwindcss/oxide-wasm32-wasi/node_modules/@emnapi/core": {
+			"version": "1.4.5",
+			"dev": true,
+			"inBundle": true,
+			"license": "MIT",
+			"optional": true,
+			"dependencies": {
+				"@emnapi/wasi-threads": "1.0.4",
+				"tslib": "^2.4.0"
+			}
+		},
+		"node_modules/@tailwindcss/oxide-wasm32-wasi/node_modules/@emnapi/runtime": {
+			"version": "1.4.5",
+			"dev": true,
+			"inBundle": true,
+			"license": "MIT",
+			"optional": true,
+			"dependencies": {
+				"tslib": "^2.4.0"
+			}
+		},
+		"node_modules/@tailwindcss/oxide-wasm32-wasi/node_modules/@emnapi/wasi-threads": {
+			"version": "1.0.4",
+			"dev": true,
+			"inBundle": true,
+			"license": "MIT",
+			"optional": true,
+			"dependencies": {
+				"tslib": "^2.4.0"
+			}
+		},
+		"node_modules/@tailwindcss/oxide-wasm32-wasi/node_modules/@napi-rs/wasm-runtime": {
+			"version": "0.2.12",
+			"dev": true,
+			"inBundle": true,
+			"license": "MIT",
+			"optional": true,
+			"dependencies": {
+				"@emnapi/core": "^1.4.3",
+				"@emnapi/runtime": "^1.4.3",
+				"@tybys/wasm-util": "^0.10.0"
+			}
+		},
+		"node_modules/@tailwindcss/oxide-wasm32-wasi/node_modules/@tybys/wasm-util": {
+			"version": "0.10.0",
+			"dev": true,
+			"inBundle": true,
+			"license": "MIT",
+			"optional": true,
+			"dependencies": {
+				"tslib": "^2.4.0"
+			}
+		},
+		"node_modules/@tailwindcss/oxide-wasm32-wasi/node_modules/tslib": {
+			"version": "2.8.0",
+			"dev": true,
+			"inBundle": true,
+			"license": "0BSD",
+			"optional": true
+		},
 		"node_modules/@tailwindcss/oxide-win32-arm64-msvc": {
 			"version": "4.1.13",
 			"resolved": "https://registry.npmjs.org/@tailwindcss/oxide-win32-arm64-msvc/-/oxide-win32-arm64-msvc-4.1.13.tgz",
@@ -3321,9 +3381,9 @@
 			"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": "20.0.7",
+			"resolved": "https://registry.npmjs.org/happy-dom/-/happy-dom-20.0.7.tgz",
+			"integrity": "sha512-CywLfzmYxP5OYpuAG0usFY0CpxJtwYR+w8Mms5J8W29Y2Pzf6rbfQS2M523tRZTb0oLA+URopPtnAQX2fupHZQ==",
 			"dev": true,
 			"license": "MIT",
 			"dependencies": {
diff --git a/frontend/package.json b/frontend/package.json
index e502254..81f4414 100644
--- a/frontend/package.json
+++ b/frontend/package.json
@@ -35,7 +35,7 @@
 		"eslint-plugin-playwright": "~2.2.*",
 		"eslint-plugin-vitest": "~0.5.*",
 		"globals": "~16.3.*",
-		"happy-dom": "~18.0.*",
+		"happy-dom": "~20.0.*",
 		"postcss": "~8.5.*",
 		"prettier": "~3.6.*",
 		"prettier-plugin-svelte": "~3.4.*",