diff --git a/testenv/node.js b/testenv/node.js
index 0f6ebcbf..5cbf2e09 100644
--- a/testenv/node.js
+++ b/testenv/node.js
@@ -36,3 +36,4 @@ globalThis.Blob = jsdom.window.Blob
 globalThis.FileReader = jsdom.window.FileReader
 globalThis.FileList = jsdom.window.FileList
 globalThis.customElements = jsdom.window.customElements
+globalThis.HTMLElement = jsdom.window.HTMLElement