diff --git a/ci/deno.yml b/ci/deno.yml
index c81f3a7..ce727a4 100644
--- a/ci/deno.yml
+++ b/ci/deno.yml
@@ -1,3 +1,8 @@
+# This workflow uses actions that are not certified by GitHub.
+# They are provided by a third-party and are governed by
+# separate terms of service, privacy policy, and support
+# documentation.
+
 # This workflow will install Deno and run tests across stable and nightly builds on Windows, Ubuntu and macOS.
 # For more information see: https://github.com/denolib/setup-deno