diff --git a/warcio/recordbuilder.py b/warcio/recordbuilder.py
index ca3c0890..a8655b3b 100644
--- a/warcio/recordbuilder.py
+++ b/warcio/recordbuilder.py
@@ -1,7 +1,7 @@
-import datetime
 import six
 import tempfile
 
+from datetime import datetime, timezone
 from io import BytesIO
 
 from warcio.recordloader import ArcWarcRecord, ArcWarcRecordLoader
@@ -153,7 +153,7 @@ def _make_warc_id(cls):
 
     @classmethod
     def _make_warc_date(cls, use_micros=False):
-        return datetime_to_iso_date(datetime.datetime.utcnow(), use_micros=use_micros)
+        return datetime_to_iso_date(datetime.now(timezone.utc), use_micros=use_micros)
 
     def ensure_digest(self, record, block=True, payload=True):
         if block: