diff --git a/synapse/logging/context.py b/synapse/logging/context.py
index 548d255b69..b36f397574 100644
--- a/synapse/logging/context.py
+++ b/synapse/logging/context.py
@@ -744,8 +744,7 @@ def preserve_fn(
@overload
-def preserve_fn(f: Callable[P, R]) -> Callable[P, "defer.Deferred[R]"]:
- ...
+def preserve_fn(f: Callable[P, R]) -> Callable[P, "defer.Deferred[R]"]: ...
def preserve_fn(
@@ -774,8 +773,7 @@ def run_in_background(
@overload
def run_in_background(
f: Callable[P, R], *args: P.args, **kwargs: P.kwargs
-) -> "defer.Deferred[R]":
- ...
+) -> "defer.Deferred[R]": ...
def run_in_background( # type: ignore[misc]
diff --git a/synapse/logging/opentracing.py b/synapse/logging/opentracing.py
index 78b9fffbfb..7a3c805cc5 100644
--- a/synapse/logging/opentracing.py
+++ b/synapse/logging/opentracing.py
@@ -388,15 +388,13 @@ def only_if_tracing(func: Callable[P, R]) -> Callable[P, Optional[R]]:
@overload
def ensure_active_span(
message: str,
-) -> Callable[[Callable[P, R]], Callable[P, Optional[R]]]:
- ...
+) -> Callable[[Callable[P, R]], Callable[P, Optional[R]]]: ...
@overload
def ensure_active_span(
message: str, ret: T
-) -> Callable[[Callable[P, R]], Callable[P, Union[T, R]]]:
- ...
+) -> Callable[[Callable[P, R]], Callable[P, Union[T, R]]]: ...
def ensure_active_span(
|