diff --git a/packages/scripts/chpaper.sh b/packages/scripts/chpaper.sh
index f88bfc7..f3a7558 100755
--- a/packages/scripts/chpaper.sh
+++ b/packages/scripts/chpaper.sh
@@ -10,7 +10,7 @@ fi
 
 random_paper() {
   if [ -d "$DIR" ] ; then
-    find -L "${DIR}"/ -type f -regextype egrep -regex ".*\.(jpe?g|png)$" | shuf -n1
+    find -L "${DIR}"/ -type f -regextype egrep -regex ".*\.(jpe?g|png)$" | shuf -n1 --random-source=/dev/urandom
   elif [ -f "$DIR" ] ; then
     echo "$DIR"
   fi