diff --git a/toolkit/mozapps/extensions/content/aboutaddons.html b/toolkit/mozapps/extensions/content/aboutaddons.html
index 77702576f03cc8db7ec85bd871e6366fef935d54..edd5f27303802091c84572a7a2d3933c03cf09d9 100644
--- a/toolkit/mozapps/extensions/content/aboutaddons.html
+++ b/toolkit/mozapps/extensions/content/aboutaddons.html
@@ -86,6 +86,7 @@
       type="module"
       src="chrome://global/content/elements/moz-five-star.mjs"
     ></script>
+    <script src="chrome://browser/content/zenThemeModifier.js"></script>
   </head>
   <body>
     <drag-drop-addon-installer></drag-drop-addon-installer>
