diff --git a/PULL_REQUEST_TEMPLATE.md b/PULL_REQUEST_TEMPLATE.md
index 91bb6f5..5dd636e 100644
--- a/PULL_REQUEST_TEMPLATE.md
+++ b/PULL_REQUEST_TEMPLATE.md
@@ -11,5 +11,6 @@ Thank you for contributing to the WebSockets Standard! Please describe the chang
    * Chrome: …
    * Firefox: …
    * Safari: …
+   * Deno: …
 
 (See [WHATWG Working Mode: Changes](https://whatwg.org/working-mode#changes) for more details.)