diff --git a/hosts/hydra/hydra.nix b/hosts/hydra/hydra.nix
index 7932cd6c..aebac57e 100644
--- a/hosts/hydra/hydra.nix
+++ b/hosts/hydra/hydra.nix
@@ -41,7 +41,7 @@ in {
     extraConfig = ''
       max_output_size = 4294967296
       evaluator_workers = 1
-      evaluator_max_memory_size = 65536
+      evaluator_max_memory_size = 4096
     '';
   };
   systemd.services.hydra-evaluator.serviceConfig = {