diff --git a/modules/virtualisation/virtualbox-image.nix b/modules/virtualisation/virtualbox-image.nix
index 073db7b255ed..bd14a7ffda00 100644
--- a/modules/virtualisation/virtualbox-image.nix
+++ b/modules/virtualisation/virtualbox-image.nix
@@ -6,7 +6,7 @@ with pkgs.lib;
   system.build.virtualBoxImage =
     pkgs.vmTools.runInLinuxVM (
       pkgs.runCommand "virtualbox-image"
-        { memSize = 512;
+        { memSize = 768;
           preVM =
             ''
               mkdir $out