diff --git a/bin/sd-copy b/bin/sd-copy
index 3038c78..88dfcee 100755
--- a/bin/sd-copy
+++ b/bin/sd-copy
@@ -15,4 +15,4 @@ DST="$1"
 shift
 
 echo "dd if=$SRC of=$DST bs=32MiB status=progress conv=fsync $*"
-dd if="$SRC" of="$DST" bs=32MiB status=progress conv=fsync "$@"
+sudo dd if="$SRC" of="$DST" bs=32MiB status=progress conv=fsync "$@"