diff --git a/modules/services/hydra.nix b/modules/services/hydra.nix
index f268680..2416920 100644
--- a/modules/services/hydra.nix
+++ b/modules/services/hydra.nix
@@ -80,7 +80,7 @@ in
             "big-parallel"
             "benchmark"
           ];
-          maxJobs = 6;
+          maxJobs = 4;
         }
       ];
 
diff --git a/modules/services/nix-cache-client.nix b/modules/services/nix-cache-client.nix
index 7b2633f..19c470b 100644
--- a/modules/services/nix-cache-client.nix
+++ b/modules/services/nix-cache-client.nix
@@ -16,7 +16,7 @@ in
       buildMachines = lib.mkIf (cfg.remoteBuilds.additional || cfg.remoteBuilds.exclusive) [
         {
           hostName = "cache.sinerva.eu";
-          maxJobs = 6;
+          maxJobs = 4;
           protocol = "ssh";
           speedFactor = 10;
           sshUser = "nix-ssh";