diff --git a/hydra/modules/sysadmin/build-machines.scm b/hydra/modules/sysadmin/build-machines.scm
index beeee6f..4af97c9 100644
--- a/hydra/modules/sysadmin/build-machines.scm
+++ b/hydra/modules/sysadmin/build-machines.scm
@@ -306,7 +306,8 @@ Match Address 141.80.167.131
                     (build-accounts
                      (* build-accounts-to-max-jobs-ratio max-jobs))
                     (extra-options
-                     (list "--max-jobs"
+                     (list "--debug"
+                           "--max-jobs"
                            (number->string max-jobs)
                            "--cores"
                            (number->string max-cores)))))))))