diff --git a/src/MfGames.Locking.Tests/LockTests.cs b/src/MfGames.Locking.Tests/LockTests.cs
index 78acf42..3a19297 100644
--- a/src/MfGames.Locking.Tests/LockTests.cs
+++ b/src/MfGames.Locking.Tests/LockTests.cs
@@ -65,9 +65,9 @@ namespace MfGames.Locking.Tests
         public void UpgradableBlocksUpgradable()
         {
             Task.WaitAll(
-                Task.Run(() => this.TestUpgradable(1, 6, 1)),
+                Task.Run(() => this.TestUpgradable(1, 10, 1)),
                 Task.Run(() => this.TestUpgradable(2, 2, 2)),
-                Task.Run(() => this.TestUpgradable(4, 1, 3)));
+                Task.Run(() => this.TestUpgradable(5, 1, 3)));
 
             this.VerifySequenceRecord(
                 (1, LockAction.BeforeLock),
@@ -147,7 +147,9 @@ namespace MfGames.Locking.Tests
             int waitTocks,
             int sequence)
         {
-            Thread.Sleep(50 * settleTocks);
+            const int TocksInMilliseconds = 100;
+
+            Thread.Sleep(TocksInMilliseconds * settleTocks);
 
             this.RecordSequenceAction(sequence, LockAction.BeforeLock);
 
@@ -157,7 +159,7 @@ namespace MfGames.Locking.Tests
 
                 this.RecordSequenceAction(sequence, LockAction.InLock);
 
-                Thread.Sleep(50 * waitTocks);
+                Thread.Sleep(TocksInMilliseconds * waitTocks);
 
                 this.RecordSequenceAction(sequence, LockAction.AfterLock);
             }