diff --git a/package.json b/package.json
index 402fa5b38d..1efd9c4104 100644
--- a/package.json
+++ b/package.json
@@ -57,7 +57,7 @@
     "browserslist-useragent-regexp": "^4.1.3",
     "eslint": "10.9.1",
     "franc-min": "^6.2.0",
-    "happy-dom": "20.11.12",
+    "happy-dom": "20.12.0",
     "license-checker-rseidelsohn": "4.4.2",
     "node-fetch": "3.3.2",
     "pino": "10.3.1",
diff --git a/pnpm-lock.yaml b/pnpm-lock.yaml
index d528369fea..08373d1bc1 100644
--- a/pnpm-lock.yaml
+++ b/pnpm-lock.yaml
@@ -181,8 +181,8 @@ importers:
         specifier: ^6.2.0
         version: 6.2.0
       happy-dom:
-        specifier: 20.11.12
-        version: 20.11.12
+        specifier: 20.12.0
+        version: 20.12.0
       license-checker-rseidelsohn:
         specifier: 4.4.2
         version: 4.4.2(supports-color@7.2.0)
@@ -230,7 +230,7 @@ importers:
         version: 4.1.1(patch_hash=b4b816bcbbbd46a52560de210fc39a55df2f65d64cc8b1ac8dcc6e097258ad1c)(vite@8.2.2(@types/node@25.9.5)(jiti@2.7.0)(yaml@2.9.0))
       vitest:
         specifier: ^4.1.2
-        version: 4.1.11(@types/node@25.9.5)(@vitest/coverage-v8@4.1.11)(happy-dom@20.11.12)(vite@8.2.2(@types/node@25.9.5)(jiti@2.7.0)(yaml@2.9.0))
+        version: 4.1.11(@types/node@25.9.5)(@vitest/coverage-v8@4.1.11)(happy-dom@20.12.0)(vite@8.2.2(@types/node@25.9.5)(jiti@2.7.0)(yaml@2.9.0))
       vitest-mock-extended:
         specifier: 5.1.1
         version: 5.1.1(typescript@6.0.3)(vitest@4.1.11)
@@ -366,7 +366,7 @@ importers:
         version: 8.2.2(@types/node@25.9.5)(jiti@2.7.0)(yaml@2.9.0)
       vitest:
         specifier: ^4.0.0
-        version: 4.1.11(@types/node@25.9.5)(@vitest/coverage-v8@4.1.11)(happy-dom@20.11.12)(vite@8.2.2(@types/node@25.9.5)(jiti@2.7.0)(yaml@2.9.0))
+        version: 4.1.11(@types/node@25.9.5)(@vitest/coverage-v8@4.1.11)(happy-dom@20.12.0)(vite@8.2.2(@types/node@25.9.5)(jiti@2.7.0)(yaml@2.9.0))
     devDependencies:
       vite-plugin-static-copy:
         specifier: ^4.0.0
@@ -3484,8 +3484,8 @@ packages:
   graceful-fs@4.2.11:
     resolution: {integrity: sha512-RbJ5/jmFcNNCcDV5o9eTnBLJ/HszWV0P73bc+Ff4nS/rJj+YaS6IGyiOL0VoBYX+l1Wrl3k63h/KrH+nhJ0XvQ==}
 
-  happy-dom@20.11.12:
-    resolution: {integrity: sha512-7+mrTTD+6fOG3dx0URrDLrCX8QDTE+YujSOQD4VPZcYze/yJ0vVhRKaIBTjqlk+R4NetxVz21odnevHYIjIJ+g==}
+  happy-dom@20.12.0:
+    resolution: {integrity: sha512-7uMYJu2SEwwL8vVcKp0C0lnt6d2LSGGe+T+oY79PiCJNNSgFpbxW8n5KuzpDQvrU4mt+fYiK1+Jy7Z2v39YR6g==}
     engines: {node: '>=20.0.0'}
 
   has-flag@4.0.0:
@@ -6486,7 +6486,7 @@ snapshots:
       obug: 2.1.4
       std-env: 4.2.0
       tinyrainbow: 3.1.1
-      vitest: 4.1.11(@types/node@25.9.5)(@vitest/coverage-v8@4.1.11)(happy-dom@20.11.12)(vite@8.2.2(@types/node@25.9.5)(jiti@2.7.0)(yaml@2.9.0))
+      vitest: 4.1.11(@types/node@25.9.5)(@vitest/coverage-v8@4.1.11)(happy-dom@20.12.0)(vite@8.2.2(@types/node@25.9.5)(jiti@2.7.0)(yaml@2.9.0))
 
   '@vitest/expect@4.1.11':
     dependencies:
@@ -6532,7 +6532,7 @@ snapshots:
   '@vitest/web-worker@4.1.11(vitest@4.1.11)':
     dependencies:
       obug: 2.1.4
-      vitest: 4.1.11(@types/node@25.9.5)(@vitest/coverage-v8@4.1.11)(happy-dom@20.11.12)(vite@8.2.2(@types/node@25.9.5)(jiti@2.7.0)(yaml@2.9.0))
+      vitest: 4.1.11(@types/node@25.9.5)(@vitest/coverage-v8@4.1.11)(happy-dom@20.12.0)(vite@8.2.2(@types/node@25.9.5)(jiti@2.7.0)(yaml@2.9.0))
 
   '@volar/language-core@2.4.28':
     dependencies:
@@ -7587,7 +7587,7 @@ snapshots:
 
   graceful-fs@4.2.11: {}
 
-  happy-dom@20.11.12:
+  happy-dom@20.12.0:
     dependencies:
       '@types/node': 25.9.5
       '@types/whatwg-mimetype': 3.0.2
@@ -9239,9 +9239,9 @@ snapshots:
     dependencies:
       ts-essentials: 10.2.1(typescript@6.0.3)
       typescript: 6.0.3
-      vitest: 4.1.11(@types/node@25.9.5)(@vitest/coverage-v8@4.1.11)(happy-dom@20.11.12)(vite@8.2.2(@types/node@25.9.5)(jiti@2.7.0)(yaml@2.9.0))
+      vitest: 4.1.11(@types/node@25.9.5)(@vitest/coverage-v8@4.1.11)(happy-dom@20.12.0)(vite@8.2.2(@types/node@25.9.5)(jiti@2.7.0)(yaml@2.9.0))
 
-  vitest@4.1.11(@types/node@25.9.5)(@vitest/coverage-v8@4.1.11)(happy-dom@20.11.12)(vite@8.2.2(@types/node@25.9.5)(jiti@2.7.0)(yaml@2.9.0)):
+  vitest@4.1.11(@types/node@25.9.5)(@vitest/coverage-v8@4.1.11)(happy-dom@20.12.0)(vite@8.2.2(@types/node@25.9.5)(jiti@2.7.0)(yaml@2.9.0)):
     dependencies:
       '@vitest/expect': 4.1.11
       '@vitest/mocker': 4.1.11(vite@8.2.2(@types/node@25.9.5)(jiti@2.7.0)(yaml@2.9.0))
@@ -9266,7 +9266,7 @@ snapshots:
     optionalDependencies:
       '@types/node': 25.9.5
       '@vitest/coverage-v8': 4.1.11(vitest@4.1.11)
-      happy-dom: 20.11.12
+      happy-dom: 20.12.0
     transitivePeerDependencies:
       - msw