diff --git a/packages/react/package.json b/packages/react/package.json
index 2a5adf981..424011497 100644
--- a/packages/react/package.json
+++ b/packages/react/package.json
@@ -39,7 +39,7 @@
     "@types/react": "^19.2.14",
     "@vitejs/plugin-react": "^6.0.1",
     "@vitest/ui": "^4.1.1",
-    "happy-dom": "^20.8.7",
+    "happy-dom": "^20.8.8",
     "react": "^19.2.4",
     "react-dom": "^19.2.4",
     "typescript": "^5.9.3",
diff --git a/pnpm-lock.yaml b/pnpm-lock.yaml
index ece04aa82..e54791a92 100644
--- a/pnpm-lock.yaml
+++ b/pnpm-lock.yaml
@@ -159,8 +159,8 @@ importers:
         specifier: ^4.1.1
         version: 4.1.1(vitest@4.0.18)
       happy-dom:
-        specifier: ^20.8.7
-        version: 20.8.7
+        specifier: ^20.8.8
+        version: 20.8.8
       react:
         specifier: ^19.2.4
         version: 19.2.4
@@ -178,7 +178,7 @@ importers:
         version: 4.5.4(@types/node@25.5.0)(rollup@4.60.0)(typescript@5.9.3)(vite@8.0.2(@types/node@25.5.0)(esbuild@0.27.3)(jiti@2.6.1)(terser@5.46.0)(yaml@2.8.3))
       vitest:
         specifier: ^4.0.18
-        version: 4.0.18(@types/node@25.5.0)(@vitest/ui@4.1.1)(happy-dom@20.8.7)(jiti@2.6.1)(jsdom@27.4.0)(lightningcss@1.32.0)(terser@5.46.0)(yaml@2.8.3)
+        version: 4.0.18(@types/node@25.5.0)(@vitest/ui@4.1.1)(happy-dom@20.8.8)(jiti@2.6.1)(jsdom@27.4.0)(lightningcss@1.32.0)(terser@5.46.0)(yaml@2.8.3)
 
   shepherd.js:
     dependencies:
@@ -262,8 +262,8 @@ importers:
         specifier: ^17.4.0
         version: 17.4.0
       happy-dom:
-        specifier: ^20.8.7
-        version: 20.8.7
+        specifier: ^20.8.8
+        version: 20.8.8
       http-server:
         specifier: ^14.1.1
         version: 14.1.1
@@ -320,7 +320,7 @@ importers:
         version: 8.0.2(@types/node@25.5.0)(esbuild@0.27.3)(jiti@2.6.1)(terser@5.46.0)(yaml@2.8.3)
       vitest:
         specifier: ^4.0.18
-        version: 4.0.18(@types/node@25.5.0)(@vitest/ui@4.0.18)(happy-dom@20.8.7)(jiti@2.6.1)(jsdom@27.4.0)(lightningcss@1.32.0)(terser@5.46.0)(yaml@2.8.3)
+        version: 4.0.18(@types/node@25.5.0)(@vitest/ui@4.0.18)(happy-dom@20.8.8)(jiti@2.6.1)(jsdom@27.4.0)(lightningcss@1.32.0)(terser@5.46.0)(yaml@2.8.3)
 
 packages:
 
@@ -4572,8 +4572,8 @@ packages:
   h3@1.15.5:
     resolution: {integrity: sha512-xEyq3rSl+dhGX2Lm0+eFQIAzlDN6Fs0EcC4f7BNUmzaRX/PTzeuM+Tr2lHB8FoXggsQIeXLj8EDVgs5ywxyxmg==}
 
-  happy-dom@20.8.7:
-    resolution: {integrity: sha512-7wfBi+UqulQlyLcis+9a+hTK0A/fMO4QKP6w6J9HnadXVkRdOvGf/N5G4XVpfgCYfnY7oKazlOSdWmsfatNSLQ==}
+  happy-dom@20.8.8:
+    resolution: {integrity: sha512-5/F8wxkNxYtsN0bXfMwIyNLZ9WYsoOYPbmoluqVJqv8KBUbcyKZawJ7uYK4WTX8IHBLYv+VXIwfeNDPy1oKMwQ==}
     engines: {node: '>=20.0.0'}
 
   has-flag@3.0.0:
@@ -11009,7 +11009,7 @@ snapshots:
       obug: 2.1.1
       std-env: 3.10.0
       tinyrainbow: 3.0.3
-      vitest: 4.0.18(@types/node@25.5.0)(@vitest/ui@4.0.18)(happy-dom@20.8.7)(jiti@2.6.1)(jsdom@27.4.0)(lightningcss@1.32.0)(terser@5.46.0)(yaml@2.8.3)
+      vitest: 4.0.18(@types/node@25.5.0)(@vitest/ui@4.0.18)(happy-dom@20.8.8)(jiti@2.6.1)(jsdom@27.4.0)(lightningcss@1.32.0)(terser@5.46.0)(yaml@2.8.3)
 
   '@vitest/expect@4.0.18':
     dependencies:
@@ -11073,7 +11073,7 @@ snapshots:
       sirv: 3.0.2
       tinyglobby: 0.2.15
       tinyrainbow: 3.1.0
-      vitest: 4.0.18(@types/node@25.5.0)(@vitest/ui@4.0.18)(happy-dom@20.8.7)(jiti@2.6.1)(jsdom@27.4.0)(lightningcss@1.32.0)(terser@5.46.0)(yaml@2.8.3)
+      vitest: 4.0.18(@types/node@25.5.0)(@vitest/ui@4.0.18)(happy-dom@20.8.8)(jiti@2.6.1)(jsdom@27.4.0)(lightningcss@1.32.0)(terser@5.46.0)(yaml@2.8.3)
     optional: true
 
   '@vitest/ui@4.1.1(vitest@4.0.18)':
@@ -11085,7 +11085,7 @@ snapshots:
       sirv: 3.0.2
       tinyglobby: 0.2.15
       tinyrainbow: 3.1.0
-      vitest: 4.0.18(@types/node@25.5.0)(@vitest/ui@4.1.1)(happy-dom@20.8.7)(jiti@2.6.1)(jsdom@27.4.0)(lightningcss@1.32.0)(terser@5.46.0)(yaml@2.8.3)
+      vitest: 4.0.18(@types/node@25.5.0)(@vitest/ui@4.1.1)(happy-dom@20.8.8)(jiti@2.6.1)(jsdom@27.4.0)(lightningcss@1.32.0)(terser@5.46.0)(yaml@2.8.3)
 
   '@vitest/utils@4.0.18':
     dependencies:
@@ -12515,7 +12515,7 @@ snapshots:
       eslint: 9.39.3(jiti@2.6.1)
     optionalDependencies:
       '@typescript-eslint/eslint-plugin': 8.56.1(@typescript-eslint/parser@8.57.2(eslint@9.39.3(jiti@2.6.1))(typescript@5.9.3))(eslint@9.39.3(jiti@2.6.1))(typescript@5.9.3)
-      vitest: 4.0.18(@types/node@25.5.0)(@vitest/ui@4.0.18)(happy-dom@20.8.7)(jiti@2.6.1)(jsdom@27.4.0)(lightningcss@1.32.0)(terser@5.46.0)(yaml@2.8.3)
+      vitest: 4.0.18(@types/node@25.5.0)(@vitest/ui@4.0.18)(happy-dom@20.8.8)(jiti@2.6.1)(jsdom@27.4.0)(lightningcss@1.32.0)(terser@5.46.0)(yaml@2.8.3)
     transitivePeerDependencies:
       - supports-color
       - typescript
@@ -13040,7 +13040,7 @@ snapshots:
       ufo: 1.6.3
       uncrypto: 0.1.3
 
-  happy-dom@20.8.7:
+  happy-dom@20.8.8:
     dependencies:
       '@types/node': 25.5.0
       '@types/whatwg-mimetype': 3.0.2
@@ -16822,7 +16822,7 @@ snapshots:
     optionalDependencies:
       vite: 6.4.1(@types/node@25.5.0)(jiti@2.6.1)(lightningcss@1.32.0)(terser@5.46.0)(yaml@2.8.3)
 
-  vitest@4.0.18(@types/node@25.5.0)(@vitest/ui@4.0.18)(happy-dom@20.8.7)(jiti@2.6.1)(jsdom@27.4.0)(lightningcss@1.32.0)(terser@5.46.0)(yaml@2.8.3):
+  vitest@4.0.18(@types/node@25.5.0)(@vitest/ui@4.0.18)(happy-dom@20.8.8)(jiti@2.6.1)(jsdom@27.4.0)(lightningcss@1.32.0)(terser@5.46.0)(yaml@2.8.3):
     dependencies:
       '@vitest/expect': 4.0.18
       '@vitest/mocker': 4.0.18(vite@7.3.1(@types/node@25.5.0)(jiti@2.6.1)(lightningcss@1.32.0)(terser@5.46.0)(yaml@2.8.3))
@@ -16847,7 +16847,7 @@ snapshots:
     optionalDependencies:
       '@types/node': 25.5.0
       '@vitest/ui': 4.0.18(vitest@4.0.18)
-      happy-dom: 20.8.7
+      happy-dom: 20.8.8
       jsdom: 27.4.0
     transitivePeerDependencies:
       - jiti
@@ -16862,7 +16862,7 @@ snapshots:
       - tsx
       - yaml
 
-  vitest@4.0.18(@types/node@25.5.0)(@vitest/ui@4.1.1)(happy-dom@20.8.7)(jiti@2.6.1)(jsdom@27.4.0)(lightningcss@1.32.0)(terser@5.46.0)(yaml@2.8.3):
+  vitest@4.0.18(@types/node@25.5.0)(@vitest/ui@4.1.1)(happy-dom@20.8.8)(jiti@2.6.1)(jsdom@27.4.0)(lightningcss@1.32.0)(terser@5.46.0)(yaml@2.8.3):
     dependencies:
       '@vitest/expect': 4.0.18
       '@vitest/mocker': 4.0.18(vite@7.3.1(@types/node@25.5.0)(jiti@2.6.1)(lightningcss@1.32.0)(terser@5.46.0)(yaml@2.8.3))
@@ -16887,7 +16887,7 @@ snapshots:
     optionalDependencies:
       '@types/node': 25.5.0
       '@vitest/ui': 4.1.1(vitest@4.0.18)
-      happy-dom: 20.8.7
+      happy-dom: 20.8.8
       jsdom: 27.4.0
     transitivePeerDependencies:
       - jiti
diff --git a/shepherd.js/package.json b/shepherd.js/package.json
index 6fb31fc24..7588d38b6 100644
--- a/shepherd.js/package.json
+++ b/shepherd.js/package.json
@@ -97,7 +97,7 @@
     "eslint-plugin-vitest": "^0.5.4",
     "execa": "^9.6.1",
     "globals": "^17.4.0",
-    "happy-dom": "^20.8.7",
+    "happy-dom": "^20.8.8",
     "http-server": "^14.1.1",
     "lodash": "^4.17.23",
     "postcss": "^8.5.8",