diff --git a/frontend/packages/erd-core/package.json b/frontend/packages/erd-core/package.json
index 767b66a30b..8792db6a30 100644
--- a/frontend/packages/erd-core/package.json
+++ b/frontend/packages/erd-core/package.json
@@ -41,7 +41,7 @@
     "@types/react": "19.1.13",
     "@vitejs/plugin-react": "4.6.0",
     "eslint": "9.36.0",
-    "happy-dom": "20.0.0",
+    "happy-dom": "20.0.2",
     "typed-css-modules": "0.9.1",
     "typescript": "5.9.2",
     "vitest": "3.2.4"
diff --git a/frontend/packages/ui/package.json b/frontend/packages/ui/package.json
index bdccc39cfb..074592b0e6 100644
--- a/frontend/packages/ui/package.json
+++ b/frontend/packages/ui/package.json
@@ -47,7 +47,7 @@
     "@types/react": "19.1.13",
     "@vitejs/plugin-react": "4.6.0",
     "eslint": "9.36.0",
-    "happy-dom": "20.0.0",
+    "happy-dom": "20.0.2",
     "typed-css-modules": "0.9.1",
     "typescript": "5.9.2",
     "vitest": "3.2.4"