diff --git a/sitemap.xml b/sitemap.xml
index 0267c00d8..abefdd00e 100644
--- a/sitemap.xml
+++ b/sitemap.xml
@@ -2386,7 +2386,7 @@
 </url>
 <url>
     <loc>https://www.ioccc.org/1992/gson/Makefile</loc>
-    <lastmod>2025-01-10T06:06:38+00:00</lastmod>
+    <lastmod>2025-01-14T23:16:41+00:00</lastmod>
 </url>
 <url>
     <loc>https://www.ioccc.org/1992/gson/mkdict.sh</loc>