diff --git a/browser/components/preferences/preferences.js b/browser/components/preferences/preferences.js
index a0e16b375f0ad7ef58bf68d7574453ef37d4557f..2d5b5a0715b5ed8ebe592eebea0219a6cde17b52 100644
--- a/browser/components/preferences/preferences.js
+++ b/browser/components/preferences/preferences.js
@@ -118,6 +118,7 @@ ChromeUtils.defineLazyGetter(this, "gSubDialog", function () {
       styleSheets: [
         "chrome://browser/skin/preferences/dialog.css",
         "chrome://browser/skin/preferences/preferences.css",
+        "chrome://browser/skin/preferences/zen-preferences.css",
       ],
       resizeCallback: async ({ title, frame }) => {
         // Search within main document and highlight matched keyword.
@@ -225,6 +226,10 @@ function init_all() {
   register_module("paneSearch", gSearchPane);
   register_module("panePrivacy", gPrivacyPane);
   register_module("paneContainers", gContainersPane);
+  register_module("paneZenLooks", gZenLooksAndFeel);
+  register_module("paneZenTabManagement", gZenWorkspacesSettings);
+  register_module("paneZenCKS", gZenCKSSettings);
+  register_module("paneZenMarketplace", gZenMarketplaceManager);
 
   for (let [subPane, config] of Object.entries(CONFIG_PANES)) {
     subPane = friendlyPrefCategoryNameToInternalName(subPane);