diff --git a/public/service-hydra-core.nix b/public/service-hydra-core.nix
index 1d84b6f..05f5d2e 100644
--- a/public/service-hydra-core.nix
+++ b/public/service-hydra-core.nix
@@ -58,7 +58,7 @@ mkIf cfg.hydra-core {
     listenHost = "localhost";
     minimumDiskFree = 50; # Go
     smtpHost = "localhost";
-    package = hydra-src-pkg ;
+    #package = hydra-src-pkg ;
   };
 
   systemd.services.hydra-evaluator = {