diff --git a/package.json b/package.json
index 4e2e1616..e2f84b0f 100644
--- a/package.json
+++ b/package.json
@@ -29,7 +29,7 @@
   "devDependencies": {
     "@changesets/cli": "^2.27.10",
     "@types/node": "^22.10.1",
-    "happy-dom": "^15.11.7",
+    "happy-dom": "^20.0.0",
     "prettier": "^3.4.2",
     "prettier-plugin-astro": "^0.14.1",
     "prettier-plugin-tailwindcss": "^0.6.9",
diff --git a/pnpm-lock.yaml b/pnpm-lock.yaml
index 68d31b66..66b13378 100644
--- a/pnpm-lock.yaml
+++ b/pnpm-lock.yaml
@@ -18,8 +18,8 @@ importers:
         specifier: ^22.10.1
         version: 22.13.1
       happy-dom:
-        specifier: ^15.11.7
-        version: 15.11.7
+        specifier: ^20.0.0
+        version: 20.0.0
       prettier:
         specifier: ^3.4.2
         version: 3.4.2
@@ -40,7 +40,7 @@ importers:
         version: 5.1.4(typescript@5.7.3)(vite@5.4.14(@types/node@22.13.1))
       vitest:
         specifier: ^2.1.8
-        version: 2.1.9(@types/node@22.13.1)(happy-dom@15.11.7)(jsdom@26.0.0)
+        version: 2.1.9(@types/node@22.13.1)(happy-dom@20.0.0)(jsdom@26.0.0)
 
   examples/javascript:
     dependencies:
@@ -2381,6 +2381,9 @@ packages:
   '@types/node@17.0.45':
     resolution: {integrity: sha512-w+tIMs3rq2afQdsPJlODhoUEKzFP1ayaoyl1CcnwtIlsVe7K7bA1NGm4s3PraqTLlXnbIN84zuBlxBWo1u9BLw==}
 
+  '@types/node@20.19.20':
+    resolution: {integrity: sha512-2Q7WS25j4pS1cS8yw3d6buNCVJukOTeQ39bAnwR6sOJbaxvyCGebzTMypDFN82CxBLnl+lSWVdCCWbRY6y9yZQ==}
+
   '@types/node@22.13.1':
     resolution: {integrity: sha512-jK8uzQlrvXqEU91UxiK5J7pKHyzgnI1Qnl0QDHIgVGuolJhRb9EEl28Cj9b3rGR8B2lhFCtvIm5os8lFnO/1Ew==}
 
@@ -2404,6 +2407,9 @@ packages:
   '@types/unist@3.0.3':
     resolution: {integrity: sha512-ko/gIFJRv177XgZsZcBwnqJN5x/Gien8qNOn0D5bQU/zAzVf9Zt3BlcUiLqhV9y4ARk0GbT3tnUiPNgnTXzc/Q==}
 
+  '@types/whatwg-mimetype@3.0.2':
+    resolution: {integrity: sha512-c2AKvDT8ToxLIOUlN51gTiHXflsfIFisS4pO7pDPoKouJCESkhZnEy623gwP9laCy5lnLDAw1vAzu2vM2YLOrA==}
+
   '@types/ws@8.5.14':
     resolution: {integrity: sha512-bd/YFLW+URhBzMXurx7lWByOu+xzU9+kb3RboOteXYDfW+tr+JZa99OyNmPINEGB/ahzKrEuc8rcv4gnpJmxTw==}
 
@@ -2438,6 +2444,7 @@ packages:
 
   '@vercel/edge@1.2.1':
     resolution: {integrity: sha512-1++yncEyIAi68D3UEOlytYb1IUcIulMWdoSzX2h9LuSeeyR7JtaIgR8DcTQ6+DmYOQn+5MCh6LY+UmK6QBByNA==}
+    deprecated: This package is deprecated. You should to use `@vercel/functions` instead.
 
   '@vercel/nft@0.29.1':
     resolution: {integrity: sha512-6239JJM1V9b3OjvZIjbe+47/hGxMr44FEzlbTErrqzebCaoKAHK+yvahn3gdNacybDUbTxVF8Zuh0vqaeM8aKQ==}
@@ -3328,9 +3335,9 @@ packages:
   h3@1.14.0:
     resolution: {integrity: sha512-ao22eiONdgelqcnknw0iD645qW0s9NnrJHr5OBz4WOMdBdycfSas1EQf1wXRsm+PcB2Yoj43pjBPwqIpJQTeWg==}
 
-  happy-dom@15.11.7:
-    resolution: {integrity: sha512-KyrFvnl+J9US63TEzwoiJOQzZBJY7KgBushJA8X61DMbNsH+2ONkDuLDnCnwUiPTF42tLoEmrPyoqbenVA5zrg==}
-    engines: {node: '>=18.0.0'}
+  happy-dom@20.0.0:
+    resolution: {integrity: sha512-GkWnwIFxVGCf2raNrxImLo397RdGhLapj5cT3R2PT7FwL62Ze1DROhzmYW7+J3p9105DYMVenEejEbnq5wA37w==}
+    engines: {node: '>=20.0.0'}
 
   has-flag@4.0.0:
     resolution: {integrity: sha512-EykJT/Q1KjTWctppgIAgfSO0tKVuZUjhgMr17kqTumMl6Afv3EISleU7qZUzoXDFTAHTDC4NOoG/ZxU3EvlMPQ==}
@@ -4724,6 +4731,7 @@ packages:
   source-map@0.8.0-beta.0:
     resolution: {integrity: sha512-2ymg6oRBpebeZi9UUNsgQ89bhx01TcTkmNTGnNO88imTmbSgy4nfujrgVEFKWpMTEGA11EDkTt7mqObTPdigIA==}
     engines: {node: '>= 8'}
+    deprecated: The work that was done in this beta branch won't be included in future versions
 
   space-separated-tokens@2.0.2:
     resolution: {integrity: sha512-PEGlAwrG8yXGXRjW32fGbg66JAlOAwbObuqVoJpv/mRgoWDQfgH1wDPvtzWyUSNAXBGSk8h755YDbbcEy3SH2Q==}
@@ -5027,6 +5035,9 @@ packages:
   undici-types@6.20.0:
     resolution: {integrity: sha512-Ny6QZ2Nju20vw1SRHe3d9jVu6gJ+4e3+MMpqu7pqE5HT6WsTSlce++GQmK5UXS8mzV8DSYHrQH+Xrf2jVcuKNg==}
 
+  undici-types@6.21.0:
+    resolution: {integrity: sha512-iwDZqg0QAGrg9Rav5H4n0M64c3mkR59cJ6wQp+7C4nI0gsmExaedaYLNO44eT4AtBBwjbTiGPMlt2Md0T9H9JQ==}
+
   unenv@1.10.0:
     resolution: {integrity: sha512-wY5bskBQFL9n3Eca5XnhH6KbUo/tfvkwm9OpcdCvLaeA7piBNbavbOKJySEwQ1V0RH6HvNlSAFRTpvTqgKRQXQ==}
 
@@ -7507,6 +7518,10 @@ snapshots:
 
   '@types/node@17.0.45': {}
 
+  '@types/node@20.19.20':
+    dependencies:
+      undici-types: 6.21.0
+
   '@types/node@22.13.1':
     dependencies:
       undici-types: 6.20.0
@@ -7529,6 +7544,8 @@ snapshots:
 
   '@types/unist@3.0.3': {}
 
+  '@types/whatwg-mimetype@3.0.2': {}
+
   '@types/ws@8.5.14':
     dependencies:
       '@types/node': 22.13.1
@@ -8617,10 +8634,10 @@ snapshots:
       uncrypto: 0.1.3
       unenv: 1.10.0
 
-  happy-dom@15.11.7:
+  happy-dom@20.0.0:
     dependencies:
-      entities: 4.5.0
-      webidl-conversions: 7.0.0
+      '@types/node': 20.19.20
+      '@types/whatwg-mimetype': 3.0.2
       whatwg-mimetype: 3.0.0
 
   has-flag@4.0.0: {}
@@ -10776,6 +10793,8 @@ snapshots:
 
   undici-types@6.20.0: {}
 
+  undici-types@6.21.0: {}
+
   unenv@1.10.0:
     dependencies:
       consola: 3.4.0
@@ -10995,7 +11014,7 @@ snapshots:
     optionalDependencies:
       vite: 6.0.11(@types/node@22.13.1)(jiti@1.21.7)(tsx@4.19.2)(yaml@2.7.0)
 
-  vitest@2.1.9(@types/node@22.13.1)(happy-dom@15.11.7)(jsdom@26.0.0):
+  vitest@2.1.9(@types/node@22.13.1)(happy-dom@20.0.0)(jsdom@26.0.0):
     dependencies:
       '@vitest/expect': 2.1.9
       '@vitest/mocker': 2.1.9(vite@5.4.14(@types/node@22.13.1))
@@ -11019,7 +11038,7 @@ snapshots:
       why-is-node-running: 2.3.0
     optionalDependencies:
       '@types/node': 22.13.1
-      happy-dom: 15.11.7
+      happy-dom: 20.0.0
       jsdom: 26.0.0
     transitivePeerDependencies:
       - less