diff --git a/user.js b/user.js
index e397ac4..2cf2f20 100644
--- a/user.js
+++ b/user.js
@@ -225,6 +225,14 @@ user_pref("browser.shopping.experience2023.enabled", false);
 user_pref("browser.shopping.experience2023.optedIn", 2);
 user_pref("browser.shopping.experience2023.survey.enabled", false);
 
+// Sidebar
+user_pref("browser.engagement.sidebar-button.has-used", false);
+user_pref("sidebar.backupState", "{}");
+user_pref("sidebar.main.tools", "");
+user_pref("sidebar.new-sidebar.has-used", false);
+user_pref("sidebar.old-sidebar.has-used", false);
+user_pref("sidebar.revamp", false);
+
 // Telemetry
 user_pref("browser.ping-centre.telemetry", false);
 user_pref("browser.search.serpEventTelemetryCategorization.enabled", false);