diff --git a/upload.sh b/upload.sh
index dd5a4ab..fbb6faf 100755
--- a/upload.sh
+++ b/upload.sh
@@ -2,6 +2,14 @@
 
 set +e
 
+for arg in "$*"
+do
+  case "$arg" in
+    "--fresh") find ./html/ -type f -name '*.upload-checksum' -delete
+      ;;
+  esac
+done
+
 for cur in ./html/{*,*/*,*/*/*}; do
   if [ -f "$cur" ] && [[ ! "$cur" == *.upload-checksum ]]; then
     if [ -f "$cur.upload-checksum" ]; then