diff --git a/layouts/authors/list.html b/layouts/authors/list.html
index 9fe7924..197f671 100644
--- a/layouts/authors/list.html
+++ b/layouts/authors/list.html
@@ -6,7 +6,7 @@
      (dict
        "image" .
        "alt" .Params.alt
-       "sizes" (slice 320 500)
+       "sizes" (slice 320 500 800)
        "classes" (slice "shadow" "author")) }}
    {{- end }}