diff --git a/sorts/split_workload.py b/sorts/split_workload.py
index f0e697b70..0d7eb02a1 100644
--- a/sorts/split_workload.py
+++ b/sorts/split_workload.py
@@ -27,7 +27,7 @@ def split_list(
     ValueError: Timings must be a list of numbers
 
     """
-    valid_timings: list[int, float] = []
+    valid_timings: list[int | float] = []
     for current_element in timings:
         if (
             isinstance(current_element, str)