diff --git a/nixos/tests/spark/default.nix b/nixos/tests/spark/default.nix
index 025c5a5222e7..462f0d23a403 100644
--- a/nixos/tests/spark/default.nix
+++ b/nixos/tests/spark/default.nix
@@ -7,6 +7,7 @@ import ../make-test-python.nix ({...}: {
         enable = true;
         master = "master:7077";
       };
+      virtualisation.memorySize = 2048;
     };
     master = { config, pkgs, ... }: {
       services.spark.master = {