diff --git a/src/lib/persistent-tabs.js b/src/lib/persistent-tabs.js
deleted file mode 100644
index a9a717b..0000000
--- a/src/lib/persistent-tabs.js
+++ /dev/null
@@ -1,41 +0,0 @@
-/*
- * NoScript - a Firefox extension for whitelist driven safe JavaScript execution
- *
- * Copyright (C) 2005-2021 Giorgio Maone <https://maone.net>
- *
- * SPDX-License-Identifier: GPL-3.0-or-later
- *
- * This program is free software: you can redistribute it and/or modify it under
- * the terms of the GNU General Public License as published by the Free Software
- * Foundation, either version 3 of the License, or (at your option) any later
- * version.
- *
- * This program is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
- * FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License along with
- * this program. If not, see <https://www.gnu.org/licenses/>.
- */
-
-if (typeof flextabs === "function") {
-
-  for (let tabs of document.querySelectorAll(".flextabs")) {
-    flextabs(tabs).init();
-    let {id} = tabs;
-    if (!id) continue;
-    let rx = new RegExp(`(?:^|[#;])tab-${id}=(\\d+)(?:;|$)`);
-    let current = location.hash.match(rx);
-    console.log(`persisted %o`, current);
-    let toggles = Array.from(tabs.querySelectorAll(".flextabs__toggle"));
-    let currentToggle = toggles[current && parseInt(current[1]) || 0];
-    if (currentToggle) currentToggle.click();
-    for (let toggle of toggles) {
-      toggle.addEventListener("click", e => {
-        let currentIdx = toggles.indexOf(toggle);
-        location.hash = location.hash.split(";").filter(p => !rx.test(p))
-          .concat(`tab-${id}=${currentIdx}`).join(";");
-      });
-    }
-  }
-}
diff --git a/src/nscl b/src/nscl
index 74ffe5f..8e753c2 160000
--- a/src/nscl
+++ b/src/nscl
@@ -1 +1 @@
-Subproject commit 74ffe5f583fe952d1114ae08665bfcaa132eb280
+Subproject commit 8e753c290fcde4673a5ca2b4a2e5960f551c0e18
diff --git a/src/ui/options.html b/src/ui/options.html
index fcf77b9..e19082a 100644
--- a/src/ui/options.html
+++ b/src/ui/options.html
@@ -156,7 +156,7 @@ SPDX-License-Identifier: GPL-3.0-or-later
 
 </div>
 </div>
-<script src="/lib/persistent-tabs.js"></script>
+<script src="/nscl/service/persistent-tabs.js"></script>
 <script src="options.js"></script>
 </body>
 </html>