diff --git a/roles/taskotron/buildmaster-configure/templates/taskotron.master.cfg.j2 b/roles/taskotron/buildmaster-configure/templates/taskotron.master.cfg.j2
index 1da3ee837a..66b946ffb3 100644
--- a/roles/taskotron/buildmaster-configure/templates/taskotron.master.cfg.j2
+++ b/roles/taskotron/buildmaster-configure/templates/taskotron.master.cfg.j2
@@ -217,6 +217,7 @@ factory.addStep(ShellCommand(command=["runtask",
                              timeout=20*60,
 {% if deployment_type in ['dev'] %}
                              sigtermTime=5*60,
+                             lazylogfiles=True,
                              logfiles={
                                  'heartbeat.log': {'filename': Interpolate('/var/lib/taskotron/artifacts/%(prop:uuid)s/taskotron/heartbeat.log')}
                              }