diff --git a/modules/firefox.nix b/modules/firefox.nix
index 935d304..9ce210c 100644
--- a/modules/firefox.nix
+++ b/modules/firefox.nix
@@ -54,6 +54,8 @@
 
     SanitizeOnShutdown.Cache = true;
     SanitizeOnShutdown.History = true;
+    SanitizeOnShutdown.SiteSettings = true;
+    SanitizeOnShutdown.Locked = true;
     
     # Cosmetic
     DisplayBookmarksToolbar = "newtab";