diff --git a/tests/test_consul.py b/tests/test_consul.py
index 321d4ef8..291eda69 100644
--- a/tests/test_consul.py
+++ b/tests/test_consul.py
@@ -161,6 +161,7 @@ class TestConsul(unittest.TestCase):
         self.c.write_leader_optime('1')
 
     @patch.object(consul.Consul.Session, 'renew', Mock())
+    @patch.object(consul.Consul.KV, 'put', Mock(side_effect=ConsulException))
     def test_update_leader(self):
         self.c.update_leader(12345)
 
@@ -217,6 +218,7 @@ class TestConsul(unittest.TestCase):
         d['role'] = 'bla'
         self.assertIsNone(self.c.update_service({}, d))
 
+    @patch.object(consul.Consul.KV, 'put', Mock(side_effect=ConsulException))
     def test_reload_config(self):
         self.assertEqual([], self.c._service_tags)
         self.c.reload_config({'consul': {'token': 'foo', 'register_service': True, 'service_tags': ['foo']},
diff --git a/tests/test_ha.py b/tests/test_ha.py
index b5c496c1..d7d28bc1 100644
--- a/tests/test_ha.py
+++ b/tests/test_ha.py
@@ -409,6 +409,7 @@ class TestHa(PostgresInit):
         self.ha.has_lock = true
         self.assertEqual(self.ha.run_cycle(), 'no action. I am (postgresql0), the leader with the lock')
 
+    @patch.object(Postgresql, '_wait_for_connection_close', Mock())
     def test_demote_because_not_having_lock(self):
         self.ha.cluster.is_unlocked = false
         with patch.object(Watchdog, 'is_running', PropertyMock(return_value=True)):
diff --git a/tests/test_patroni.py b/tests/test_patroni.py
index 74821704..44e4c0c9 100644
--- a/tests/test_patroni.py
+++ b/tests/test_patroni.py
@@ -54,6 +54,7 @@ class TestPatroni(unittest.TestCase):
         self.assertRaises(SystemExit, patroni_main)
 
     @patch('sys.argv', ['patroni.py', '--validate-config', 'postgres0.yml'])
+    @patch('socket.socket.connect_ex', Mock(return_value=1))
     def test_validate_config(self):
         self.assertRaises(SystemExit, patroni_main)