diff --git a/CODEOWNERS b/CODEOWNERS
index 20264e6..53393e1 100644
--- a/CODEOWNERS
+++ b/CODEOWNERS
@@ -4,3 +4,4 @@ lispguide.xml @sfreilich
 csharp-style.md @jbcoe
 pyguide.md @gpshead
 pylintrc @gpshead
+htmlcssguide.html @tonyruscoe