diff --git a/modules/gnome-config.nix b/modules/gnome-config.nix
index 1e4aa5d..15a1cd8 100644
--- a/modules/gnome-config.nix
+++ b/modules/gnome-config.nix
@@ -52,6 +52,11 @@
       "org/gnome/desktop/media-handling" = {
         # Settings > Removable Media > Never promt or start apps on media insertion
         autorun-never = true;
+
+        # Don't automount external drives.
+        # https://unix.stackexchange.com/a/460299/315162
+        automount = false;
+        automount-open = false;
       };
 
       "org/gnome/settings-daemon/plugins/power" = {