diff --git a/once/update.sh b/once/update.sh
index 68cd929..6962973 100755
--- a/once/update.sh
+++ b/once/update.sh
@@ -48,6 +48,10 @@ for tarball in $tarballs; do
 	mv /updates/$tarball        /tarballs/
 	mv /updates/$tarball.sha256 /tarballs/
 
+	grep -v $tarball /etc/tarballs.sha256 > /etc/tarballs.sha256.tmp
+	printf '%s  %s\n' $pkgsig $tarball >> /etc/tarballs.sha256.tmp
+	mv /etc/tarballs.sha256.tmp /etc/tarballs.sha256
+
 	echo ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
 	echo
 done