diff --git a/certbot-dns-rfc2136/certbot_dns_rfc2136/dns_rfc2136_test.py b/certbot-dns-rfc2136/certbot_dns_rfc2136/dns_rfc2136_test.py
index 89ce3d93e..9d3a0fbfd 100644
--- a/certbot-dns-rfc2136/certbot_dns_rfc2136/dns_rfc2136_test.py
+++ b/certbot-dns-rfc2136/certbot_dns_rfc2136/dns_rfc2136_test.py
@@ -7,6 +7,7 @@ import dns.flags
 import dns.rcode
 import dns.tsig
 import mock
+import pytest
 
 from certbot import errors
 from certbot.plugins import dns_test_common
@@ -70,6 +71,7 @@ class AuthenticatorTest(test_util.TempDirTestCase, dns_test_common.BaseAuthentic
         self.auth.perform([self.achall])
 
 
+@pytest.mark.filterwarnings("ignore::ResourceWarning", "ignore:decodestring:DeprecationWarning")
 class RFC2136ClientTest(unittest.TestCase):
 
     def setUp(self):