diff --git a/test/Microsoft.TestPlatform.CrossPlatEngine.UnitTests/Client/Parallel/ParallelProxyDiscoveryManagerTests.cs b/test/Microsoft.TestPlatform.CrossPlatEngine.UnitTests/Client/Parallel/ParallelProxyDiscoveryManagerTests.cs
index ef8e35d589..066afb05cb 100644
--- a/test/Microsoft.TestPlatform.CrossPlatEngine.UnitTests/Client/Parallel/ParallelProxyDiscoveryManagerTests.cs
+++ b/test/Microsoft.TestPlatform.CrossPlatEngine.UnitTests/Client/Parallel/ParallelProxyDiscoveryManagerTests.cs
@@ -25,7 +25,7 @@ namespace TestPlatform.CrossPlatEngine.UnitTests.Client;
 [TestClass]
 public class ParallelProxyDiscoveryManagerTests
 {
-    private const int Timeout3Seconds = 3 * 1000;
+    private const int Timeout10Seconds = 10 * 1000;
     private readonly Queue<Mock<IProxyDiscoveryManager>> _preCreatedMockManagers;
     private readonly List<Mock<IProxyDiscoveryManager>> _usedMockManagers;
     private readonly Func<TestRuntimeProviderInfo, DiscoveryCriteria, IProxyDiscoveryManager> _createMockManager;
@@ -126,7 +126,7 @@ public void DiscoverTestsShouldProcessAllSources()
         var parallelDiscoveryManager = SetupDiscoveryManager(_createMockManager, 2, false);
 
         var task = Task.Run(() => parallelDiscoveryManager.DiscoverTests(_discoveryCriteriaWith2Sources, _mockEventHandler.Object));
-        var discoveryCompleted = _discoveryCompleted.Wait(Timeout3Seconds);
+        var discoveryCompleted = _discoveryCompleted.Wait(Timeout10Seconds);
 
         if (task.IsCompleted)
         {
@@ -214,7 +214,7 @@ public void DiscoveryTestsShouldStopDiscoveryIfAbortionWasRequested()
             parallelDiscoveryManager.Abort();
         });
 
-        Assert.IsTrue(_discoveryCompleted.Wait(Timeout3Seconds), "Test discovery not completed.");
+        Assert.IsTrue(_discoveryCompleted.Wait(Timeout10Seconds), "Test discovery not completed.");
         Assert.AreEqual(1, _processedSources.Count, "One source should be processed.");
     }
 
@@ -232,7 +232,7 @@ public void DiscoveryTestsShouldStopDiscoveryIfAbortionWithEventHandlerWasReques
             parallelDiscoveryManager.Abort(_mockEventHandler.Object);
         });
 
-        Assert.IsTrue(_discoveryCompleted.Wait(Timeout3Seconds), "Test discovery not completed.");
+        Assert.IsTrue(_discoveryCompleted.Wait(Timeout10Seconds), "Test discovery not completed.");
         Assert.AreEqual(1, _processedSources.Count, "One source should be processed.");
     }
 
@@ -252,7 +252,7 @@ public void DiscoveryTestsShouldProcessAllSourceIfOneDiscoveryManagerIsStarved()
         Task.Run(() => parallelDiscoveryManager.DiscoverTests(_discoveryCriteriaWith2Sources, _mockEventHandler.Object));
 
         // Processed sources should be 1 since the 2nd source is never discovered
-        Assert.IsTrue(_discoveryCompleted.Wait(Timeout3Seconds), "Test discovery not completed.");
+        Assert.IsTrue(_discoveryCompleted.Wait(Timeout10Seconds), "Test discovery not completed.");
         Assert.AreEqual(1, _processedSources.Count, "All Sources must be processed.");
     }
 
@@ -272,7 +272,7 @@ public void DiscoveryTestsShouldCatchExceptionAndHandleLogMessageOfError()
         Task.Run(() => parallelDiscoveryManager.DiscoverTests(_discoveryCriteriaWith2Sources, _mockEventHandler.Object));
 
         // Processed sources should be 1 since the 2nd source is never discovered
-        Assert.IsTrue(_discoveryCompleted.Wait(Timeout3Seconds), "Test discovery not completed.");
+        Assert.IsTrue(_discoveryCompleted.Wait(Timeout10Seconds), "Test discovery not completed.");
         _mockEventHandler.Verify(s => s.HandleLogMessage(TestMessageLevel.Error, It.IsAny<string>()), Times.Once);
     }
 
@@ -292,7 +292,7 @@ public void DiscoveryTestsShouldCatchExceptionAndHandleRawMessageOfTestMessage()
         Task.Run(() => parallelDiscoveryManager.DiscoverTests(_discoveryCriteriaWith2Sources, _mockEventHandler.Object));
 
         // Processed sources should be 1 since the 2nd source is never discovered
-        Assert.IsTrue(_discoveryCompleted.Wait(Timeout3Seconds), "Test discovery not completed.");
+        Assert.IsTrue(_discoveryCompleted.Wait(Timeout10Seconds), "Test discovery not completed.");
         _mockEventHandler.Verify(s => s.HandleRawMessage(It.Is<string>(str => str.Contains(MessageType.TestMessage))));
     }
 
@@ -324,7 +324,7 @@ public void DiscoveryTestsWithCompletionMarksAllSourcesAsFullyDiscovered()
 
         Task.Run(() => parallelDiscoveryManager.DiscoverTests(_discoveryCriteriaWith2Sources, _mockEventHandler.Object));
 
-        Assert.IsTrue(_discoveryCompleted.Wait(Timeout3Seconds), "Test discovery not completed.");
+        Assert.IsTrue(_discoveryCompleted.Wait(Timeout10Seconds), "Test discovery not completed.");
         Assert.AreEqual(_sources.Count, _processedSources.Count, "All Sources must be processed.");
         CollectionAssert.AreEquivalent(_sources, _dataAggregator.GetSourcesWithStatus(DiscoveryStatus.FullyDiscovered));
         Assert.AreEqual(0, _dataAggregator.GetSourcesWithStatus(DiscoveryStatus.PartiallyDiscovered).Count);