diff --git a/nixos/tests/armagetronad.nix b/nixos/tests/armagetronad.nix
index ca93ce8fb6c5..0fe197860a54 100644
--- a/nixos/tests/armagetronad.nix
+++ b/nixos/tests/armagetronad.nix
@@ -13,7 +13,7 @@ let
 
     { imports = [ ./common/user-account.nix ./common/x11.nix ];
       hardware.graphics.enable = true;
-      virtualisation.memorySize = 256;
+      virtualisation.memorySize = 384;
       environment = {
         systemPackages = [ pkgs.armagetronad ];
         variables.XAUTHORITY = "/home/${user}/.Xauthority";