diff --git a/pytest_textual_snapshot.py b/pytest_textual_snapshot.py
index 44c5fd4..5a06ba3 100644
--- a/pytest_textual_snapshot.py
+++ b/pytest_textual_snapshot.py
@@ -6,7 +6,7 @@
 import re
 import shutil
 from dataclasses import dataclass
-from datetime import datetime
+from datetime import datetime, timezone
 from operator import attrgetter
 from os import PathLike
 from pathlib import Path, PurePath
@@ -369,7 +369,7 @@ def save_svg_diffs(
             pass_percentage=100 * (num_snapshots_passing / max(num_snapshot_tests, 1)),
             fail_percentage=100 * (num_fails / max(num_snapshot_tests, 1)),
             num_snapshot_tests=num_snapshot_tests,
-            now=datetime.utcnow(),
+            now=datetime.now(tz=timezone.utc),
             file_open_prefix=os.getenv("TEXTUAL_SNAPSHOT_FILE_OPEN_PREFIX", "file://"),
         )
         with open(snapshot_report_path, "w+", encoding="utf-8") as snapshot_file: