diff --git a/layouts/shortcodes/random_image.html b/layouts/shortcodes/random_image.html
index 6c3d983..40b47de 100644
--- a/layouts/shortcodes/random_image.html
+++ b/layouts/shortcodes/random_image.html
@@ -3,7 +3,7 @@
 {{- errorf "missing value for 'image.choices': %s" .Position }}
 {{- end }}
 {{- $alt := default "random image" ($.Page.Param "image.alt") }}
-{{- $id := sha256 now.UnixNano }}
+{{- $id := sha256 (index (seq 999 | shuffle) 0) }}
 <p id="{{ $id }}">
   <img class="centered pad-vertical" >
 </p>