diff --git a/server/dearmep/config.py b/server/dearmep/config.py
index 2d8509c6..7afc64ef 100644
--- a/server/dearmep/config.py
+++ b/server/dearmep/config.py
@@ -293,7 +293,7 @@ def intervals_by_weekday(
         If a weekday has no office hours, it will not be in the return value.
         """
         return {
-            cast(WeekdayNumber, daynum): [
+            cast("WeekdayNumber", daynum): [
                 OfficeHoursInterval(begin=self.begin, end=self.end),
             ]
             for daynum in range(1, 8)
diff --git a/server/dearmep/convert/parltrack/mep.py b/server/dearmep/convert/parltrack/mep.py
index b8ee9061..bfb97fff 100644
--- a/server/dearmep/convert/parltrack/mep.py
+++ b/server/dearmep/convert/parltrack/mep.py
@@ -122,13 +122,13 @@ def convert_person(raw_mep: Dict[str, Any]) -> Iterable[DumpableModels]:
     # Get the current group & constituency.
     group = next((
         group
-        for group in cast(List[Dict[str, str]], raw_mep.get("Groups", []))
+        for group in cast("List[Dict[str, str]]", raw_mep.get("Groups", []))
         if is_current(group)
     ), None)
     constituency = next((
         constituency
         for constituency in cast(
-            List[Dict[str, str]], raw_mep.get("Constituencies", []))
+            "List[Dict[str, str]]", raw_mep.get("Constituencies", []))
         if is_current(constituency)
     ), None)
 
diff --git a/server/dearmep/convert/xml.py b/server/dearmep/convert/xml.py
index 8cbffba4..6e27befc 100644
--- a/server/dearmep/convert/xml.py
+++ b/server/dearmep/convert/xml.py
@@ -10,7 +10,7 @@ def get_text(node: Union[Element, Text]) -> str:
     """Recursively concatenate text nodes in the `node`."""
     if node.nodeType == node.TEXT_NODE:
         # This casting is plain ugly, but otherwise mypy doesn't know it's str.
-        return str(cast(Text, node).data)
+        return str(cast("Text", node).data)
     return "".join(
         get_text(child)
         for child in node.childNodes
diff --git a/server/dearmep/database/query.py b/server/dearmep/database/query.py
index fe6913c0..1be85810 100644
--- a/server/dearmep/database/query.py
+++ b/server/dearmep/database/query.py
@@ -71,7 +71,7 @@ def escape_for_like(value: str) -> str:
 
 def get_available_countries(session: Session) -> List[str]:
     countries = session.exec(select(Destination.country).distinct()).all()
-    return cast(List[str], countries) \
+    return cast("List[str]", countries) \
         if isinstance(countries, List) and len(countries) \
         and isinstance(countries[0], str) \
         else []
@@ -800,11 +800,11 @@ def get_currently_scheduled_calls(
         ScheduledCall.day == now.isoweekday(),
         and_(
             col(ScheduledCall.postponed_to).is_not(None),
-            cast(datetime, ScheduledCall.postponed_to) <= now,
+            cast("datetime", ScheduledCall.postponed_to) <= now,
         ),
         or_(
             col(ScheduledCall.last_postpone_queued_at).is_(None),
-            cast(date, ScheduledCall.last_postpone_queued_at) < now.date(),
+            cast("date", ScheduledCall.last_postpone_queued_at) < now.date(),
         ),
     ).order_by(ScheduledCall.postponed_to)).all()
 
@@ -817,7 +817,7 @@ def get_currently_scheduled_calls(
         ),
         or_(
             col(ScheduledCall.last_queued_at).is_(None),
-            cast(date, ScheduledCall.last_queued_at) < now.date(),
+            cast("date", ScheduledCall.last_queued_at) < now.date(),
         ),
     ).order_by(ScheduledCall.start_time)).all()