diff --git a/src/pretix/control/logdisplay.py b/src/pretix/control/logdisplay.py
index 361a1aac50..12fb8455da 100644
--- a/src/pretix/control/logdisplay.py
+++ b/src/pretix/control/logdisplay.py
@@ -39,7 +39,6 @@ from decimal import Decimal
 from typing import Optional
 
 import bleach
-import dateutil.parser
 from django.dispatch import receiver
 from django.urls import reverse
 from django.utils.formats import date_format
@@ -261,7 +260,7 @@ class OrderValidUntilChanged(OrderChangeLogEntryType):
     def display_prefixed(self, event: Event, logentry: LogEntry, data):
         return _('The validity end date for position #{posid} has been changed to {value}.').format(
             posid=data.get('positionid', '?'),
-            value=date_format(dateutil.parser.parse(data.get('new_value')), 'SHORT_DATETIME_FORMAT') if data.get('new_value') else '–'
+            value=date_format(datetime.fromisoformat(data.get('new_value')), 'SHORT_DATETIME_FORMAT') if data.get('new_value') else '–'
         )
 
 
@@ -365,7 +364,7 @@ class CheckinErrorLogEntryType(OrderLogEntryType):
         data['posid'] = logentry.parsed_data.get('positionid', '?')
 
         if 'datetime' in data:
-            dt = dateutil.parser.parse(data.get('datetime'))
+            dt = datetime.fromisoformat(data.get('datetime'))
             if abs((logentry.datetime - dt).total_seconds()) > 5 or data.get('forced'):
                 if event:
                     data['datetime'] = date_format(dt.astimezone(event.timezone), "SHORT_DATETIME_FORMAT")
@@ -431,7 +430,7 @@ class OrderPrintLogEntryType(OrderLogEntryType):
         return _('Position #{posid} has been printed at {datetime} with type "{type}".').format(
             posid=data.get('positionid'),
             datetime=date_format(
-                dateutil.parser.parse(data["datetime"]).astimezone(logentry.event.timezone),
+                datetime.fromisoformat(data["datetime"]).astimezone(logentry.event.timezone),
                 "SHORT_DATETIME_FORMAT"
             ) if logentry.event else data["datetime"],
             type=dict(PrintLog.PRINT_TYPES)[data["type"]],
@@ -986,7 +985,7 @@ class LegacyCheckinLogEntryType(OrderLogEntryType):
 
     def display(self, logentry, data):
         # deprecated
-        dt = dateutil.parser.parse(data.get('datetime'))
+        dt = datetime.fromisoformat(data.get('datetime'))
         tz = logentry.event.timezone
         dt_formatted = date_format(dt.astimezone(tz), "SHORT_DATETIME_FORMAT")
         if 'list' in data: