diff --git a/config.fronting-groups.example.json b/config.fronting-groups.example.json
index 7c57746d..a1759dc6 100644
--- a/config.fronting-groups.example.json
+++ b/config.fronting-groups.example.json
@@ -44,6 +44,7 @@
 
         "githubassets.com",
         "githubusercontent.com",
+        "github.io",
 
         "pypi.org",