diff --git a/scripts/browser_history.py b/scripts/browser_history.py
index b550cf33..e3c846d9 100755
--- a/scripts/browser_history.py
+++ b/scripts/browser_history.py
@@ -1,7 +1,7 @@
 #!/usr/bin/env python3
 DEPRECATION = 'NOTE: this is DEPRECATED! Please use https://github.com/seanbreckenridge/browserexport instead'
 
-from datetime import datetime
+from datetime import datetime, timezone
 from pathlib import Path
 from subprocess import check_output
 import filecmp
@@ -70,7 +70,7 @@ def backup_history(browser: Browser, to: Path, profile: str='*', pattern=None) -
     assert to.is_dir()
     logger = get_logger()
 
-    now = format_dt(datetime.utcnow())
+    now = format_dt(datetime.now(tz=timezone.utc))
 
     path = get_path(browser, profile=profile)
 
@@ -99,7 +99,7 @@ def guess_db_date(db: Path) -> str:
         '-csv',
         db,
         'SELECT max(datetime(((visits.visit_time/1000000)-11644473600), "unixepoch")) FROM visits;'
-    ]).decode('utf8').strip().strip('"');
+    ]).decode('utf8').strip().strip('"')
     return format_dt(datetime.strptime(maxvisit, "%Y-%m-%d %H:%M:%S"))
 
 
diff --git a/src/promnesia/sources/takeout_legacy.py b/src/promnesia/sources/takeout_legacy.py
index 66c18d39..675397a6 100644
--- a/src/promnesia/sources/takeout_legacy.py
+++ b/src/promnesia/sources/takeout_legacy.py
@@ -113,7 +113,7 @@ def read_browser_history_json(takeout: TakeoutPath) -> Iterable[Visit]:
     hist = j['Browser History']
     for item in hist:
         url = item['url']
-        time = datetime.utcfromtimestamp(item['time_usec'] / 10 ** 6).replace(tzinfo=pytz.utc)
+        time = datetime.fromtimestamp(item['time_usec'] / 10 ** 6, tz=pytz.utc)
         # TODO any more interesitng info?
         yield Visit(
             url=url,
diff --git a/src/promnesia/tests/test_extract.py b/src/promnesia/tests/test_extract.py
index ed200c0d..d140f7af 100644
--- a/src/promnesia/tests/test_extract.py
+++ b/src/promnesia/tests/test_extract.py
@@ -1,4 +1,4 @@
-from datetime import datetime
+from datetime import datetime, timezone
 
 from ..common import Visit, DbVisit, Loc, Source
 from ..extract import extract_visits
@@ -14,9 +14,9 @@ class ExtractionError(Exception):
         pass
 
     def indexer():
-        yield Visit(url='http://test1', dt=datetime.utcfromtimestamp(0), locator=Loc.make('whatever'))
+        yield Visit(url='http://test1', dt=datetime.fromtimestamp(0, tz=timezone.utc), locator=Loc.make('whatever'))
         yield ExtractionError()
-        yield Visit(url='http://test2', dt=datetime.utcfromtimestamp(0), locator=Loc.make('whatever'))
+        yield Visit(url='http://test2', dt=datetime.fromtimestamp(0, tz=timezone.utc), locator=Loc.make('whatever'))
 
     [v1, e, v2] = extract_visits(source=Source(indexer), src='whatever')
     assert isinstance(v1, DbVisit)