From c3461ab5c6c2ced43755c428ed9ddf9ffc7fbddf Mon Sep 17 00:00:00 2001
From: Brett <brettgraham@gmail.com>
Date: Mon, 21 Aug 2023 10:17:40 -0400
Subject: [PATCH] update datetime usage for python 3.12

---
 asdf/asdf.py | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/asdf/asdf.py b/asdf/asdf.py
index 0ea3b45ef..ac6da11e1 100644
--- a/asdf/asdf.py
+++ b/asdf/asdf.py
@@ -1336,8 +1336,9 @@ def add_history_entry(self, description, software=None):
         elif software is not None:
             software = Software(software)
 
-        time_ = datetime.datetime.utcfromtimestamp(
+        time_ = datetime.datetime.fromtimestamp(
             int(os.environ.get("SOURCE_DATE_EPOCH", time.time())),
+            datetime.timezone.utc
         )
 
         entry = HistoryEntry(