diff --git a/mailcow/src/mailcow-dockerized/data/web/css/flags/4x3/by.svg b/mailcow/src/mailcow-dockerized/data/web/css/flags/4x3/by.svg
new file mode 100644
index 0000000..9566c6a
--- /dev/null
+++ b/mailcow/src/mailcow-dockerized/data/web/css/flags/4x3/by.svg
@@ -0,0 +1,20 @@
+<svg xmlns="http://www.w3.org/2000/svg" id="flag-icon-css-by" viewBox="0 0 640 480">
+  <defs>
+    <clipPath id="by-a">
+      <path fill-opacity=".7" d="M0 0h682.6v512H0z"/>
+    </clipPath>
+  </defs>
+  <g fill-rule="evenodd" clip-path="url(#by-a)" transform="scale(.9376 .9375)">
+    <path fill="#b20000" d="M0 0h1024v340.1H0z"/>
+    <path fill="#429f00" d="M0 340.1h1024V512H0z"/>
+    <path fill="#fff" d="M0 0h113.4v512H0z"/>
+    <g fill="#b20000" stroke-width="1pt">
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