diff --git a/management/dns_update.py b/management/dns_update.py
index 5505ff2a..29a6453f 100755
--- a/management/dns_update.py
+++ b/management/dns_update.py
@@ -120,7 +120,7 @@ def do_dns_update(env, force=False):
 
 	# Clear unbound's DNS cache so our own DNS resolver is up to date.
 	# (ignore errors with trap=True)
-	shell('check_call', ["/usr/sbin/unbound-control", "flush_zone", "."], trap=True)
+	shell('check_call', ["/usr/sbin/unbound-control", "flush_zone", ".", "-q"], trap=True)
 
 	if len(updated_domains) == 0:
 		# if nothing was updated (except maybe OpenDKIM's files), don't show any output
diff --git a/management/status_checks.py b/management/status_checks.py
index f59042f8..ba7a682b 100755
--- a/management/status_checks.py
+++ b/management/status_checks.py
@@ -56,7 +56,7 @@ def run_checks(rounded_values, env, output, pool, domains_to_check=None):
 	# clear unbound's DNS cache so our DNS checks are up to date
 	# (ignore errors; if unbound isn't running we'd already report
 	# that in run_services checks.)
-	shell('check_call', ["/usr/sbin/unbound-control", "flush_zone", "."], trap=True)
+	shell('check_call', ["/usr/sbin/unbound-control", "flush_zone", ".", "-q"], trap=True)
 
 	run_system_checks(rounded_values, env, output)