diff --git a/cassandra/util.py b/cassandra/util.py
index dd5c58b01..486284a05 100644
--- a/cassandra/util.py
+++ b/cassandra/util.py
@@ -34,7 +34,7 @@
 from cassandra import DriverException
 
 DATETIME_EPOC = datetime.datetime(1970, 1, 1)
-UTC_DATETIME_EPOC = datetime.datetime.utcfromtimestamp(0)
+UTC_DATETIME_EPOC = datetime.datetime.fromtimestamp(0,  tz=datetime.timezone.utc)
 
 _nan = float('nan')
 
diff --git a/pytest.ini b/pytest.ini
index 084627342..5380b333b 100644
--- a/pytest.ini
+++ b/pytest.ini
@@ -3,3 +3,9 @@ log_format = %(asctime)s.%(msecs)03d %(levelname)s [%(module)s:%(lineno)s]: %(me
 log_level = DEBUG
 log_date_format = %Y-%m-%d %H:%M:%S
 xfail_strict=true
+
+
+addopts =
+    -Werror
+    -W'ignore::pytest.PytestCollectionWarning'
+    -W'ignore:distutils Version classes are deprecated:DeprecationWarning:eventlet.support.greenlets'