diff --git a/nixos/modules/services/x11/desktop-managers/gnome3.nix b/nixos/modules/services/x11/desktop-managers/gnome3.nix
index 20385c884b5..125fffa8251 100644
--- a/nixos/modules/services/x11/desktop-managers/gnome3.nix
+++ b/nixos/modules/services/x11/desktop-managers/gnome3.nix
@@ -176,6 +176,10 @@ in
               wmCommand = "${pkgs.gnome3.metacity}/bin/metacity";
             } ++ cfg.flashback.customSessions);
 
+      systemd.packages = with pkgs.gnome3; [
+        gnome-flashback
+      ];
+
       security.pam.services.gnome-screensaver = {
         enableGnomeKeyring = true;
       };