diff --git a/package.json b/package.json
index b4b49da..eedce73 100644
--- a/package.json
+++ b/package.json
@@ -49,7 +49,7 @@
     "eslint": "^9.25.1",
     "eslint-import-resolver-exports": "^1.0.0-beta.5",
     "globals": "^16.2.0",
-    "happy-dom": "^17.4.6",
+    "happy-dom": "^17.5.6",
     "vitest": "^3.1.1",
     "yaem": "foretagsplatsen/yaem#1.0.0"
   },
diff --git a/yarn.lock b/yarn.lock
index d824e5e..36033b8 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -3054,10 +3054,10 @@ graphemer@^1.4.0:
   resolved "https://registry.yarnpkg.com/graphemer/-/graphemer-1.4.0.tgz#fb2f1d55e0e3a1849aeffc90c4fa0dd53a0e66c6"
   integrity sha512-EtKwoO6kxCL9WO5xipiHTZlSzBm7WLT627TqC/uVRd0HKmq8NXyebnNYxDoBi7wt8eTWrUrKXCOVaFq9x1kgag==
 
-happy-dom@^17.4.6:
-  version "17.4.6"
-  resolved "https://registry.yarnpkg.com/happy-dom/-/happy-dom-17.4.6.tgz#7a94bbba593e3ed800795b24124c4f3a1dc64f54"
-  integrity sha512-OEV1hDe9i2rFr66+WZNiwy1S8rAJy6bRXmXql68YJDjdfHBRbN76om+qVh68vQACf6y5Bcr90e/oK53RQxsDdg==
+happy-dom@^17.5.6:
+  version "17.5.6"
+  resolved "https://registry.yarnpkg.com/happy-dom/-/happy-dom-17.5.6.tgz#9831953143d77392728cbdbf4bbbe517837a9f91"
+  integrity sha512-B4U6jKuiizwCJ2WP0YreQmRdeBrHKOXhpz7YUbbwdSAKfWEhdG4UfWZOZTZ5Oejs/9yJtk7xmbfp8YdVL9LVFA==
   dependencies:
     webidl-conversions "^7.0.0"
     whatwg-mimetype "^3.0.0"