diff --git a/gallery_dl/extractor/8chan.py b/gallery_dl/extractor/8chan.py
index 51163326..f174ad99 100644
--- a/gallery_dl/extractor/8chan.py
+++ b/gallery_dl/extractor/8chan.py
@@ -9,9 +9,9 @@
 """Extractors for https://8chan.moe/"""
 
 from .common import Extractor, Message
-from .. import text
+from .. import text, util
 from ..cache import memcache
-from datetime import datetime, timedelta
+from datetime import timedelta
 import itertools
 
 BASE_PATTERN = r"(?:https?://)?8chan\.(moe|se|cc)"
@@ -34,14 +34,14 @@ class _8chanExtractor(Extractor):
     def cookies_prepare(self):
         # fetch captcha cookies
         # (necessary to download without getting interrupted)
-        now = datetime.utcnow()
+        now = util.datetime_utcnow()
         url = self.root + "/captcha.js"
         params = {"d": now.strftime("%a %b %d %Y %H:%M:%S GMT+0000 (UTC)")}
         self.request(url, params=params).content
 
         # adjust cookies
         # - remove 'expires' timestamp
-        # - move 'captchaexpiration' value forward by 1 month)
+        # - move 'captchaexpiration' value forward by 1 month
         domain = self.root.rpartition("/")[2]
         for cookie in self.cookies:
             if cookie.domain.endswith(domain):
diff --git a/gallery_dl/extractor/pixiv.py b/gallery_dl/extractor/pixiv.py
index 3479b88f..c908e448 100644
--- a/gallery_dl/extractor/pixiv.py
+++ b/gallery_dl/extractor/pixiv.py
@@ -448,7 +448,8 @@ class PixivRankingExtractor(PixivExtractor):
                 self.log.warning("invalid date '%s'", date)
                 date = None
         if not date:
-            date = (datetime.utcnow() - timedelta(days=1)).strftime("%Y-%m-%d")
+            now = util.datetime_utcnow()
+            date = (now - timedelta(days=1)).strftime("%Y-%m-%d")
         self.date = date
 
         return {"ranking": {
@@ -887,7 +888,7 @@ class PixivAppAPI():
             "get_secure_url": "1",
         }
 
-        time = datetime.utcnow().strftime("%Y-%m-%dT%H:%M:%S+00:00")
+        time = util.datetime_utcnow().strftime("%Y-%m-%dT%H:%M:%S+00:00")
         headers = {
             "X-Client-Time": time,
             "X-Client-Hash": hashlib.md5(
diff --git a/gallery_dl/text.py b/gallery_dl/text.py
index 92581875..8517cdf5 100644
--- a/gallery_dl/text.py
+++ b/gallery_dl/text.py
@@ -9,7 +9,9 @@
 """Collection of functions that work on strings/text"""
 
 import re
+import sys
 import html
+import time
 import datetime
 import urllib.parse
 
@@ -247,12 +249,23 @@ def parse_query(qs):
     return result
 
 
-def parse_timestamp(ts, default=None):
-    """Create a datetime object from a unix timestamp"""
-    try:
-        return datetime.datetime.utcfromtimestamp(int(ts))
-    except Exception:
-        return default
+if sys.hexversion < 0x30c0000:
+    # Python <= 3.11
+    def parse_timestamp(ts, default=None):
+        """Create a datetime object from a Unix timestamp"""
+        try:
+            return datetime.datetime.utcfromtimestamp(int(ts))
+        except Exception:
+            return default
+else:
+    # Python >= 3.12
+    def parse_timestamp(ts, default=None):
+        """Create a datetime object from a Unix timestamp"""
+        try:
+            Y, m, d, H, M, S, _, _, _ = time.gmtime(int(ts))
+            return datetime.datetime(Y, m, d, H, M, S)
+        except Exception:
+            return default
 
 
 def parse_datetime(date_string, format="%Y-%m-%dT%H:%M:%S%z", utcoffset=0):
diff --git a/gallery_dl/util.py b/gallery_dl/util.py
index 967479da..128f48b7 100644
--- a/gallery_dl/util.py
+++ b/gallery_dl/util.py
@@ -218,18 +218,34 @@ def to_string(value):
 
 
 def datetime_to_timestamp(dt):
-    """Convert naive UTC datetime to timestamp"""
+    """Convert naive UTC datetime to Unix timestamp"""
     return (dt - EPOCH) / SECOND
 
 
 def datetime_to_timestamp_string(dt):
-    """Convert naive UTC datetime to timestamp string"""
+    """Convert naive UTC datetime to Unix timestamp string"""
     try:
         return str((dt - EPOCH) // SECOND)
     except Exception:
         return ""
 
 
+if sys.hexversion < 0x30c0000:
+    # Python <= 3.11
+    datetime_utcfromtimestamp = datetime.datetime.utcfromtimestamp
+    datetime_utcnow = datetime.datetime.utcnow
+    datetime_from_timestamp = datetime_utcfromtimestamp
+else:
+    # Python >= 3.12
+    def datetime_from_timestamp(ts=None):
+        """Convert Unix timestamp to naive UTC datetime"""
+        Y, m, d, H, M, S, _, _, _ = time.gmtime(ts)
+        return datetime.datetime(Y, m, d, H, M, S)
+
+    datetime_utcfromtimestamp = datetime_from_timestamp
+    datetime_utcnow = datetime_from_timestamp
+
+
 def json_default(obj):
     if isinstance(obj, CustomNone):
         return None
diff --git a/test/test_extractor.py b/test/test_extractor.py
index abf122b7..a45f5c9e 100644
--- a/test/test_extractor.py
+++ b/test/test_extractor.py
@@ -243,9 +243,12 @@ class TestExtractorWait(unittest.TestCase):
 
     def test_wait_until_datetime(self):
         extr = extractor.find("generic:https://example.org/")
-        until = datetime.utcnow() + timedelta(seconds=5)
+        until = util.datetime_utcnow() + timedelta(seconds=5)
         until_local = datetime.now() + timedelta(seconds=5)
 
+        if not until.microsecond:
+            until = until.replace(microsecond=until_local.microsecond)
+
         with patch("time.sleep") as sleep, patch.object(extr, "log") as log:
             extr.wait(until=until)
 
diff --git a/test/test_text.py b/test/test_text.py
index c99729c0..084436b1 100644
--- a/test/test_text.py
+++ b/test/test_text.py
@@ -14,7 +14,7 @@ import unittest
 import datetime
 
 sys.path.insert(0, os.path.dirname(os.path.dirname(os.path.abspath(__file__))))
-from gallery_dl import text  # noqa E402
+from gallery_dl import text, util  # noqa E402
 
 
 INVALID = ((), [], {}, None, 1, 2.3)
@@ -414,8 +414,8 @@ class TestText(unittest.TestCase):
             self.assertEqual(f(value), {})
 
     def test_parse_timestamp(self, f=text.parse_timestamp):
-        null = datetime.datetime.utcfromtimestamp(0)
-        value = datetime.datetime.utcfromtimestamp(1555816235)
+        null = util.datetime_utcfromtimestamp(0)
+        value = util.datetime_utcfromtimestamp(1555816235)
 
         self.assertEqual(f(0)           , null)
         self.assertEqual(f("0")         , null)
@@ -427,7 +427,7 @@ class TestText(unittest.TestCase):
             self.assertEqual(f(value, "foo"), "foo")
 
     def test_parse_datetime(self, f=text.parse_datetime):
-        null = datetime.datetime.utcfromtimestamp(0)
+        null = util.datetime_utcfromtimestamp(0)
 
         self.assertEqual(f("1970-01-01T00:00:00+00:00"), null)
         self.assertEqual(f("1970-01-01T00:00:00+0000") , null)
diff --git a/test/test_util.py b/test/test_util.py
index fd2ff8ba..e2db29bf 100644
--- a/test/test_util.py
+++ b/test/test_util.py
@@ -738,6 +738,22 @@ def hash(value):
         self.assertEqual(f(datetime.datetime(2010, 1, 1)), "1262304000")
         self.assertEqual(f(None), "")
 
+    def test_datetime_from_timestamp(
+            self, f=util.datetime_from_timestamp):
+        self.assertEqual(f(0.0), util.EPOCH)
+        self.assertEqual(f(1262304000.0), datetime.datetime(2010, 1, 1))
+        self.assertEqual(f(1262304000.128000).replace(microsecond=0),
+                         datetime.datetime(2010, 1, 1, 0, 0, 0))
+
+    def test_datetime_utcfromtimestamp(
+            self, f=util.datetime_utcfromtimestamp):
+        self.assertEqual(f(0.0), util.EPOCH)
+        self.assertEqual(f(1262304000.0), datetime.datetime(2010, 1, 1))
+
+    def test_datetime_utcnow(
+            self, f=util.datetime_utcnow):
+        self.assertIsInstance(f(), datetime.datetime)
+
     def test_universal_none(self):
         obj = util.NONE