diff --git a/assignments/leaders5.xlsx b/assignments/leaders5.xlsx
new file mode 100644
index 0000000..37ea709
Binary files /dev/null and b/assignments/leaders5.xlsx differ
diff --git a/docs/sitemap.xml b/docs/sitemap.xml
index 3c1bf86..64f3aac 100644
--- a/docs/sitemap.xml
+++ b/docs/sitemap.xml
@@ -182,7 +182,7 @@
   </url>
   <url>
     <loc>https://bf.numbat.space/assignments/A1.html</loc>
-    <lastmod>2024-05-23T00:41:46.987Z</lastmod>
+    <lastmod>2024-06-10T02:38:35.995Z</lastmod>
   </url>
   <url>
     <loc>https://bf.numbat.space/week12/index.html</loc>