diff --git a/src/holt59/aoc/base.py b/src/holt59/aoc/base.py
index bc644b9..5ba8ada 100644
--- a/src/holt59/aoc/base.py
+++ b/src/holt59/aoc/base.py
@@ -7,12 +7,10 @@ _T = TypeVar("_T")
 
 class ProgressHandler(Protocol):
     @overload
-    def wrap(self, values: Sequence[_T]) -> Iterator[_T]:
-        ...
+    def wrap(self, values: Sequence[_T]) -> Iterator[_T]: ...
 
     @overload
-    def wrap(self, values: Iterable[_T], total: int) -> Iterator[_T]:
-        ...
+    def wrap(self, values: Iterable[_T], total: int) -> Iterator[_T]: ...
 
 
 class BaseSolver:
@@ -33,5 +31,4 @@ class BaseSolver:
         self.outputs = outputs
 
     @abstractmethod
-    def solve(self, input: str) -> Iterator[Any] | None:
-        ...
+    def solve(self, input: str) -> Iterator[Any] | None: ...