diff --git a/clone-backup.sh b/clone-backup.sh
index 2de7f398..ba6e2b0b 100755
--- a/clone-backup.sh
+++ b/clone-backup.sh
@@ -25,5 +25,5 @@ if [ "$3" = "--print-timestamp-only" ]; then
 fi
 
 base_url="$1"
-aria2c -x8 -j8 -s8 -d "$LOCAL_DIR" "${files[@]/#/$base_url}"
+aria2c --skip-existing -x8 -j8 -s8 -d "$LOCAL_DIR" "${files[@]/#/$base_url}"