diff --git a/machines/core-services-01/drone-runners.nix b/machines/core-services-01/drone-runners.nix
index 196b1d4..51675ea 100644
--- a/machines/core-services-01/drone-runners.nix
+++ b/machines/core-services-01/drone-runners.nix
@@ -5,9 +5,11 @@ in
 {
   services.drone-exec-runner.nix01 = {
     enable = true;
+    restartIfChanged = false; # Prevent from killing itself as it is a core machine.
     env = [
       "DRONE_RUNNER_CAPACITY=${toString capacity}"
       "CLIENT_DRONE_RPC_HOST=127.0.0.1:${toString config.services.drone-server.port}"
+      "DRONE_RUNNER_LABELS=nix:true,core:true" # nix-ready and runs on a core machine.
     ];
     envFile = config.age.secrets.droneKeyFile.path;
   };
diff --git a/machines/core-services-01/nix/sources.json b/machines/core-services-01/nix/sources.json
index 83adeaa..edc3ecf 100644
--- a/machines/core-services-01/nix/sources.json
+++ b/machines/core-services-01/nix/sources.json
@@ -14,7 +14,7 @@
     "klubrz-nur": {
         "branch": "main",
         "repo": "https://git.rz.ens.wtf/Klub-RZ/nur",
-        "rev": "420773149ef98de6a19ae6c551f9f4c6b60e0c1c",
+        "rev": "2d9da6ab1f53af1bff116426e79aeb35408681f6",
         "type": "git"
     },
     "niv": {