diff --git a/src/Testing/src/AssemblyTestLog.cs b/src/Testing/src/AssemblyTestLog.cs
index 611b853fac..bd69cd20a3 100644
--- a/src/Testing/src/AssemblyTestLog.cs
+++ b/src/Testing/src/AssemblyTestLog.cs
@@ -1,5 +1,6 @@
-// Copyright (c) .NET Foundation. All rights reserved.
-// Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information.
+// Licensed to the .NET Foundation under one or more agreements.
+// The .NET Foundation licenses this file to you under the MIT license.
+// See the LICENSE file in the project root for more information.
 
 using System;
 using System.Collections.Generic;
diff --git a/src/Testing/src/CollectDumpAttribute.cs b/src/Testing/src/CollectDumpAttribute.cs
index c9e8ee3fa6..5f4a1eee59 100644
--- a/src/Testing/src/CollectDumpAttribute.cs
+++ b/src/Testing/src/CollectDumpAttribute.cs
@@ -1,5 +1,6 @@
-// Copyright (c) .NET Foundation. All rights reserved.
-// Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information.
+// Licensed to the .NET Foundation under one or more agreements.
+// The .NET Foundation licenses this file to you under the MIT license.
+// See the LICENSE file in the project root for more information.
 
 using System;
 using System.Diagnostics;
diff --git a/src/Testing/src/DumpCollector/DumpCollector.Windows.cs b/src/Testing/src/DumpCollector/DumpCollector.Windows.cs
index 8d4168c20c..20395208d7 100644
--- a/src/Testing/src/DumpCollector/DumpCollector.Windows.cs
+++ b/src/Testing/src/DumpCollector/DumpCollector.Windows.cs
@@ -1,5 +1,6 @@
-// Copyright (c) .NET Foundation. All rights reserved.
-// Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information.
+// Licensed to the .NET Foundation under one or more agreements.
+// The .NET Foundation licenses this file to you under the MIT license.
+// See the LICENSE file in the project root for more information.
 
 using System;
 using System.Diagnostics;
diff --git a/src/Testing/src/DumpCollector/DumpCollector.cs b/src/Testing/src/DumpCollector/DumpCollector.cs
index 67043ed827..d67e109b38 100644
--- a/src/Testing/src/DumpCollector/DumpCollector.cs
+++ b/src/Testing/src/DumpCollector/DumpCollector.cs
@@ -1,5 +1,6 @@
-// Copyright (c) .NET Foundation. All rights reserved.
-// Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information.
+// Licensed to the .NET Foundation under one or more agreements.
+// The .NET Foundation licenses this file to you under the MIT license.
+// See the LICENSE file in the project root for more information.
 
 using System.Diagnostics;
 using System.Runtime.InteropServices;
diff --git a/src/Testing/src/LoggedTest/ILoggedTest.cs b/src/Testing/src/LoggedTest/ILoggedTest.cs
index a906ae84a2..750f45cd91 100644
--- a/src/Testing/src/LoggedTest/ILoggedTest.cs
+++ b/src/Testing/src/LoggedTest/ILoggedTest.cs
@@ -1,5 +1,6 @@
-// Copyright (c) .NET Foundation. All rights reserved.
-// Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information.
+// Licensed to the .NET Foundation under one or more agreements.
+// The .NET Foundation licenses this file to you under the MIT license.
+// See the LICENSE file in the project root for more information.
 
 using System;
 using System.Reflection;
diff --git a/src/Testing/src/LoggedTest/LoggedTest.cs b/src/Testing/src/LoggedTest/LoggedTest.cs
index d108ffb7e8..169a94f59d 100644
--- a/src/Testing/src/LoggedTest/LoggedTest.cs
+++ b/src/Testing/src/LoggedTest/LoggedTest.cs
@@ -1,5 +1,6 @@
-// Copyright (c) .NET Foundation. All rights reserved.
-// Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information.
+// Licensed to the .NET Foundation under one or more agreements.
+// The .NET Foundation licenses this file to you under the MIT license.
+// See the LICENSE file in the project root for more information.
 
 using System.Reflection;
 using Microsoft.AspNetCore.Testing;
diff --git a/src/Testing/src/LoggedTest/LoggedTestBase.cs b/src/Testing/src/LoggedTest/LoggedTestBase.cs
index 324b855319..16dde9676c 100644
--- a/src/Testing/src/LoggedTest/LoggedTestBase.cs
+++ b/src/Testing/src/LoggedTest/LoggedTestBase.cs
@@ -1,5 +1,6 @@
-// Copyright (c) .NET Foundation. All rights reserved.
-// Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information.
+// Licensed to the .NET Foundation under one or more agreements.
+// The .NET Foundation licenses this file to you under the MIT license.
+// See the LICENSE file in the project root for more information.
 
 using System;
 using System.Linq;
diff --git a/src/Testing/src/TestFrameworkFileLoggerAttribute.cs b/src/Testing/src/TestFrameworkFileLoggerAttribute.cs
index 1059fa76f2..61fa9993e8 100644
--- a/src/Testing/src/TestFrameworkFileLoggerAttribute.cs
+++ b/src/Testing/src/TestFrameworkFileLoggerAttribute.cs
@@ -1,5 +1,6 @@
-// Copyright (c) .NET Foundation. All rights reserved.
-// Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information.
+// Licensed to the .NET Foundation under one or more agreements.
+// The .NET Foundation licenses this file to you under the MIT license.
+// See the LICENSE file in the project root for more information.
 
 using System;
 using Microsoft.AspNetCore.Testing;
diff --git a/src/Testing/test/AssemblyTestLogTests.cs b/src/Testing/test/AssemblyTestLogTests.cs
index dbefa4ccd2..27a7cf83cf 100644
--- a/src/Testing/test/AssemblyTestLogTests.cs
+++ b/src/Testing/test/AssemblyTestLogTests.cs
@@ -1,5 +1,6 @@
-// Copyright (c) .NET Foundation. All rights reserved.
-// Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information.
+// Licensed to the .NET Foundation under one or more agreements.
+// The .NET Foundation licenses this file to you under the MIT license.
+// See the LICENSE file in the project root for more information.
 
 using System;
 using System.IO;
diff --git a/src/Testing/test/LoggedTestXunitTests.cs b/src/Testing/test/LoggedTestXunitTests.cs
index d8454023a2..61d7802508 100644
--- a/src/Testing/test/LoggedTestXunitTests.cs
+++ b/src/Testing/test/LoggedTestXunitTests.cs
@@ -1,5 +1,6 @@
-// Copyright (c) .NET Foundation. All rights reserved.
-// Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information.
+// Licensed to the .NET Foundation under one or more agreements.
+// The .NET Foundation licenses this file to you under the MIT license.
+// See the LICENSE file in the project root for more information.
 
 using System.Linq;
 using System.Reflection;
diff --git a/src/Testing/test/TestTestOutputHelper.cs b/src/Testing/test/TestTestOutputHelper.cs
index 7043fe4ed2..5a5f6aa85f 100644
--- a/src/Testing/test/TestTestOutputHelper.cs
+++ b/src/Testing/test/TestTestOutputHelper.cs
@@ -1,5 +1,6 @@
-// Copyright (c) .NET Foundation. All rights reserved.
-// Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information.
+// Licensed to the .NET Foundation under one or more agreements.
+// The .NET Foundation licenses this file to you under the MIT license.
+// See the LICENSE file in the project root for more information.
 
 using System;
 using System.Text;