diff --git a/packages/siwx/package.json b/packages/siwx/package.json
index d5eda45f2a..b84b38e2f5 100644
--- a/packages/siwx/package.json
+++ b/packages/siwx/package.json
@@ -47,7 +47,7 @@
   "devDependencies": {
     "@types/react": "19.1.15",
     "@vitest/coverage-v8": "2.1.9",
-    "happy-dom": "17.1.0",
+    "happy-dom": "20.8.9",
     "react": "19.1.2",
     "vitest": "3.1.3",
     "vue": "3.5.13"