diff --git a/package.json b/package.json
index da9ad8f..894a880 100644
--- a/package.json
+++ b/package.json
@@ -95,8 +95,9 @@
     "@types/bun": "latest",
     "@types/web": "latest",
     "expect": "^29.6.2",
+    "jest-environment-jsdom-sixteen": "^1.0.3",
     "jest-watch-select-projects": "^2.0.0",
-    "jsdom": "^16.2.1",
+    "jsdom": "^21.1.2",
     "kcd-scripts": "^14.0.0",
     "pretty-format": "^25.1.0",
     "rollup": "^3.28.1",