diff --git a/package.json b/package.json
index d8999aa..55f18db 100644
--- a/package.json
+++ b/package.json
@@ -37,7 +37,7 @@
     "@vue/test-utils": "^2.4.6",
     "@vue/tsconfig": "^0.8.1",
     "ai": "^6.0.28",
-    "happy-dom": "^18.0.1",
+    "happy-dom": "^20.0.2",
     "highlight.js": "^11.11.1",
     "langchain": "^0.3.19",
     "lodash": "^4.17.21",
diff --git a/yarn.lock b/yarn.lock
index 157d460..4c99e1f 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -2306,10 +2306,10 @@ gopd@^1.2.0:
   resolved "https://registry.yarnpkg.com/gopd/-/gopd-1.2.0.tgz#89f56b8217bdbc8802bd299df6d7f1081d7e51a1"
   integrity sha512-ZUKRh6/kUFoAiTAtTYPZJ3hw9wNxx+BIBOijnlG9PnrJsCcSjs1wyyD6vJpaYtgnzDrKYRSqf3OO6Rfa93xsRg==
 
-happy-dom@^18.0.1:
-  version "18.0.1"
-  resolved "https://registry.yarnpkg.com/happy-dom/-/happy-dom-18.0.1.tgz#8f8a2199462842deb675f54e405af55f3b674540"
-  integrity sha512-qn+rKOW7KWpVTtgIUi6RVmTBZJSe2k0Db0vh1f7CWrWclkkc7/Q+FrOfkZIb2eiErLyqu5AXEzE7XthO9JVxRA==
+happy-dom@^20.0.2:
+  version "20.0.2"
+  resolved "https://registry.yarnpkg.com/happy-dom/-/happy-dom-20.0.2.tgz#da676a1e3d0742aff8ba4789db90445842538808"
+  integrity sha512-pYOyu624+6HDbY+qkjILpQGnpvZOusItCk+rvF5/V+6NkcgTKnbOldpIy22tBnxoaLtlM9nXgoqAcW29/B7CIw==
   dependencies:
     "@types/node" "^20.0.0"
     "@types/whatwg-mimetype" "^3.0.2"