diff --git a/site.cfg b/site.cfg
index f49f0ba..369089d 100644
--- a/site.cfg
+++ b/site.cfg
@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: CC0-1.0
 TITLE="Canoeboot"
 DOMAIN="https://canoeboot.org/"
 BLOGDIR="news/" # leave as empty string if you want the blog to be the homepage