diff --git a/src/Foundatio.TestHarness/Queue/QueueTestBase.cs b/src/Foundatio.TestHarness/Queue/QueueTestBase.cs
index d0baf10c..b8903106 100644
--- a/src/Foundatio.TestHarness/Queue/QueueTestBase.cs
+++ b/src/Foundatio.TestHarness/Queue/QueueTestBase.cs
@@ -1501,7 +1501,7 @@ public virtual async Task MaintainJobNotAbandon_NotWorkTimeOutEntry()
                 Id = 2
             });
 
-            var dequeuedQueueItem = Assert.IsType<QueueEntry<SimpleWorkItem>>(await queue.DequeueAsync());
+            var dequeuedQueueItem = Assert.IsAssignableFrom<QueueEntry<SimpleWorkItem>>(await queue.DequeueAsync());
             Assert.NotNull(dequeuedQueueItem.Value);
             // The first dequeued item works for 60 milliseconds less than work timeout(100 milliseconds).
             await Task.Delay(60);
@@ -1509,7 +1509,7 @@ public virtual async Task MaintainJobNotAbandon_NotWorkTimeOutEntry()
             Assert.True(dequeuedQueueItem.IsCompleted);
             Assert.False(dequeuedQueueItem.IsAbandoned);
 
-            dequeuedQueueItem = Assert.IsType<QueueEntry<SimpleWorkItem>>(await queue.DequeueAsync());
+            dequeuedQueueItem = Assert.IsAssignableFrom<QueueEntry<SimpleWorkItem>>(await queue.DequeueAsync());
             Assert.NotNull(dequeuedQueueItem.Value);
             // The second dequeued item works for 60 milliseconds less than work timeout(100 milliseconds).
             await Task.Delay(60);