diff --git a/sorts/bogo_sort.py b/sorts/bogo_sort.py
index 9c133f0d8a55..d4b88ac26508 100644
--- a/sorts/bogo_sort.py
+++ b/sorts/bogo_sort.py
@@ -16,7 +16,7 @@
 import random
 
 
-def bogo_sort(collection):
+def bogo_sort(collection: list[int]) -> list[int]:
     """Pure implementation of the bogosort algorithm in Python
     :param collection: some mutable ordered collection with heterogeneous
     comparable items inside
@@ -30,7 +30,7 @@ def bogo_sort(collection):
     [-45, -5, -2]
     """
 
-    def is_sorted(collection):
+    def is_sorted(collection: list[int]) -> bool:
         for i in range(len(collection) - 1):
             if collection[i] > collection[i + 1]:
                 return False
diff --git a/sorts/circle_sort.py b/sorts/circle_sort.py
index 271fa1e8d58a..981ea2b83179 100644
--- a/sorts/circle_sort.py
+++ b/sorts/circle_sort.py
@@ -9,7 +9,7 @@
 """
 
 
-def circle_sort(collection: list) -> list:
+def circle_sort(collection: list[int]) -> list[int]:
     """A pure Python implementation of circle sort algorithm
 
     :param collection: a mutable collection of comparable items in any order
@@ -30,7 +30,7 @@ def circle_sort(collection: list) -> list:
     if len(collection) < 2:
         return collection
 
-    def circle_sort_util(collection: list, low: int, high: int) -> bool:
+    def circle_sort_util(collection: list[int], low: int, high: int) -> bool:
         """
         >>> arr = [5,4,3,2,1]
         >>> circle_sort_util(lst, 0, 2)
diff --git a/sorts/cycle_sort.py b/sorts/cycle_sort.py
index 7177c8ea110d..ac636860ed09 100644
--- a/sorts/cycle_sort.py
+++ b/sorts/cycle_sort.py
@@ -3,8 +3,12 @@
 Source: https://en.wikipedia.org/wiki/Cycle_sort
 """
 
+from typing import TypeVar
 
-def cycle_sort(array: list) -> list:
+T = TypeVar("T", int, float)
+
+
+def cycle_sort(array: list[T]) -> list[T]:
     """
     >>> cycle_sort([4, 3, 2, 1])
     [1, 2, 3, 4]
@@ -51,3 +55,5 @@ def cycle_sort(array: list) -> list:
 if __name__ == "__main__":
     assert cycle_sort([4, 5, 3, 2, 1]) == [1, 2, 3, 4, 5]
     assert cycle_sort([0, 1, -10, 15, 2, -2]) == [-10, -2, 0, 1, 2, 15]
+    assert cycle_sort([-0.1, -0.2, 1.3, -0.8]) == [-0.8, -0.2, -0.1, 1.3]
+    print("All tests passed")
diff --git a/sorts/merge_sort.py b/sorts/merge_sort.py
index 11c202788035..10db332fa099 100644
--- a/sorts/merge_sort.py
+++ b/sorts/merge_sort.py
@@ -10,7 +10,7 @@
 """
 
 
-def merge_sort(collection: list) -> list:
+def merge_sort(collection: list[int]) -> list[int]:
     """
     Sorts a list using the merge sort algorithm.
 
@@ -29,7 +29,7 @@ def merge_sort(collection: list) -> list:
     [-45, -5, -2]
     """
 
-    def merge(left: list, right: list) -> list:
+    def merge(left: list[int], right: list[int]) -> list[int]:
         """
         Merge two sorted lists into a single sorted list.
 
diff --git a/sorts/odd_even_sort.py b/sorts/odd_even_sort.py
index 7dfe03054bc3..1543f52c23e4 100644
--- a/sorts/odd_even_sort.py
+++ b/sorts/odd_even_sort.py
@@ -5,7 +5,7 @@
 """
 
 
-def odd_even_sort(input_list: list) -> list:
+def odd_even_sort(input_list: list[int]) -> list[int]:
     """
     Sort input with odd even sort.