diff --git a/pytests/resources/test_queue.py b/pytests/resources/test_queue.py
index 9279f0c259d92dab0575629f4bc9eca55a1bed0b..fb3e6de075b74bf74087f3e01b44916448fdaae7 100644
--- a/pytests/resources/test_queue.py
+++ b/pytests/resources/test_queue.py
@@ -11,15 +11,15 @@ PyTests for custom Queue implementation.
 # System Imports.
 
 # User Class Imports.
-from resources.queue import Queue
+from resources.queue import Myqueue
 
 
 
 class TestQueue():
-    test_queue = Queue()
+    test_queue = Myqueue()
 
     def test_queue_creation(self):
-        assert isinstance(self.test_queue, Queue)
+        assert isinstance(self.test_queue, Myqueue)
 
     def test_enqueue(self):
         # Test initial state.
diff --git a/pytests/resources/test_stack.py b/pytests/resources/test_stack.py
index 594543bc3fee6f5da0cc9c2be76608235ecfb650..3633c8a55c20ed0c8c5dbd3a1ef8c578d5093672 100644
--- a/pytests/resources/test_stack.py
+++ b/pytests/resources/test_stack.py
@@ -12,15 +12,15 @@ PyTests for custom Stack implementation.
 # System Imports.
 
 # User Class Imports.
-from resources.stack import Stack
+from resources.stack import Mystack
 
 
 
 class TestStack():
-    test_stack = Stack()
+    test_stack = Mystack()
 
     def test_stack_creation(self):
-        assert isinstance(self.test_stack, Stack)
+        assert isinstance(self.test_stack, Mystack)
 
     def test_push(self):
         # Test initial state.
diff --git a/resources/queue.py b/resources/queue.py
index c5cc04b1b1b4ee394dad2b31df67a6a3e461d3f4..436e9fc1819970978becde25635c1637457cce75 100644
--- a/resources/queue.py
+++ b/resources/queue.py
@@ -56,3 +56,9 @@ class Queue():
             return True
         else:
             return False
+
+
+class Myqueue(Queue):
+    """
+    To follow assignment requirements, create new "Myqueue" class that inherits from "Queue".
+    """
diff --git a/resources/stack.py b/resources/stack.py
index 2b90c660faadeb35e6abc41acbaa5775a90e8ca2..767b604670fe47f9a7a4b91c8c1add82e3c0eba1 100644
--- a/resources/stack.py
+++ b/resources/stack.py
@@ -59,3 +59,9 @@ class Stack():
         :return: Count of elements in stack.
         """
         return len(self._data_)
+
+
+class Mystack(Stack):
+    """
+    To follow assignment requirements, create new "Mystack" class that inherits from "Stack".
+    """
diff --git a/unittests/resources/queue.py b/unittests/resources/queue.py
index 0ad25faea082835747bd97c2340c4bdb5401acb8..b9d546c4df03276d3068e042c30e32ed99342055 100644
--- a/unittests/resources/queue.py
+++ b/unittests/resources/queue.py
@@ -13,15 +13,15 @@ UnitTests for custom Stack implementation.
 import unittest
 
 # User Class Imports.
-from resources.queue import Queue
+from resources.queue import Myqueue
 
 
 class TestQueue(unittest.TestCase):
     def setUp(self):
-        self.test_queue = Queue()
+        self.test_queue = Myqueue()
 
     def test_queue_creation(self):
-        self.assertTrue(isinstance(self.test_queue, Queue))
+        self.assertTrue(isinstance(self.test_queue, Myqueue))
 
     def test_enqueue(self):
         # Test initial state.
diff --git a/unittests/resources/stack.py b/unittests/resources/stack.py
index 2dfe92794623b53f20ad9427245d320ab4392e47..9b1c5291ebcb288ace91bd96b5c4421820c70822 100644
--- a/unittests/resources/stack.py
+++ b/unittests/resources/stack.py
@@ -13,15 +13,15 @@ UnitTests for custom Stack implementation.
 import unittest
 
 # User Class Imports.
-from resources.stack import Stack
+from resources.stack import Mystack
 
 
 class TestStack(unittest.TestCase):
     def setUp(self):
-        self.test_stack = Stack()
+        self.test_stack = Mystack()
 
     def test_stack_creation(self):
-        self.assertTrue(isinstance(self.test_stack, Stack))
+        self.assertTrue(isinstance(self.test_stack, Mystack))
 
     def test_push(self):
         # Test initial state.