diff --git a/config/services/hydra/nix-config.nix b/config/services/hydra/nix-config.nix
index 5b77fac..753e05a 100644
--- a/config/services/hydra/nix-config.nix
+++ b/config/services/hydra/nix-config.nix
@@ -12,8 +12,8 @@
     {
       hostName = "integra.kyouma.net";
       sshUser = "build";
-      maxJobs = 4;
-      speedFactor = 8;
+      maxJobs = 2;
+      speedFactor = 4;
       systems = [ "aarch64-linux" ];
       supportedFeatures = [ "nixos-test" "benchmark" "big-parallel" "kvm" ];
       sshKey = config.sops.secrets."services/hydra/id_ed25519_hydra".path;