diff --git a/tests/ImageSharp.Tests/PixelFormats/PixelOperations/PixelOperationsTests.Argb32OperationsTests.cs b/tests/ImageSharp.Tests/PixelFormats/PixelOperations/PixelOperationsTests.Argb32OperationsTests.cs
index 875ba0cba..c881ae96b 100644
--- a/tests/ImageSharp.Tests/PixelFormats/PixelOperations/PixelOperationsTests.Argb32OperationsTests.cs
+++ b/tests/ImageSharp.Tests/PixelFormats/PixelOperations/PixelOperationsTests.Argb32OperationsTests.cs
@@ -1,4 +1,7 @@
-using SixLabors.ImageSharp.PixelFormats;
+// Copyright (c) Six Labors and contributors.
+// Licensed under the Apache License, Version 2.0.
+
+using SixLabors.ImageSharp.PixelFormats;
 
 using Xunit;
 using Xunit.Abstractions;
diff --git a/tests/ImageSharp.Tests/PixelFormats/PixelOperations/PixelOperationsTests.Bgr24OperationsTests.cs b/tests/ImageSharp.Tests/PixelFormats/PixelOperations/PixelOperationsTests.Bgr24OperationsTests.cs
index 879712a3e..323d3914c 100644
--- a/tests/ImageSharp.Tests/PixelFormats/PixelOperations/PixelOperationsTests.Bgr24OperationsTests.cs
+++ b/tests/ImageSharp.Tests/PixelFormats/PixelOperations/PixelOperationsTests.Bgr24OperationsTests.cs
@@ -1,4 +1,7 @@
-using SixLabors.ImageSharp.PixelFormats;
+// Copyright (c) Six Labors and contributors.
+// Licensed under the Apache License, Version 2.0.
+
+using SixLabors.ImageSharp.PixelFormats;
 
 using Xunit;
 using Xunit.Abstractions;
diff --git a/tests/ImageSharp.Tests/PixelFormats/PixelOperations/PixelOperationsTests.Bgra32OperationsTests.cs b/tests/ImageSharp.Tests/PixelFormats/PixelOperations/PixelOperationsTests.Bgra32OperationsTests.cs
index 963a9dae6..1c966951f 100644
--- a/tests/ImageSharp.Tests/PixelFormats/PixelOperations/PixelOperationsTests.Bgra32OperationsTests.cs
+++ b/tests/ImageSharp.Tests/PixelFormats/PixelOperations/PixelOperationsTests.Bgra32OperationsTests.cs
@@ -1,4 +1,7 @@
-using SixLabors.ImageSharp.PixelFormats;
+// Copyright (c) Six Labors and contributors.
+// Licensed under the Apache License, Version 2.0.
+
+using SixLabors.ImageSharp.PixelFormats;
 
 using Xunit;
 using Xunit.Abstractions;
diff --git a/tests/ImageSharp.Tests/PixelFormats/PixelOperations/PixelOperationsTests.Gray16OperationsTests.cs b/tests/ImageSharp.Tests/PixelFormats/PixelOperations/PixelOperationsTests.Gray16OperationsTests.cs
index 1afa65240..c3de33547 100644
--- a/tests/ImageSharp.Tests/PixelFormats/PixelOperations/PixelOperationsTests.Gray16OperationsTests.cs
+++ b/tests/ImageSharp.Tests/PixelFormats/PixelOperations/PixelOperationsTests.Gray16OperationsTests.cs
@@ -1,4 +1,7 @@
-using System;
+// Copyright (c) Six Labors and contributors.
+// Licensed under the Apache License, Version 2.0.
+
+using System;
 using System.Runtime.CompilerServices;
 using System.Runtime.InteropServices;
 
diff --git a/tests/ImageSharp.Tests/PixelFormats/PixelOperations/PixelOperationsTests.Gray8OperationsTests.cs b/tests/ImageSharp.Tests/PixelFormats/PixelOperations/PixelOperationsTests.Gray8OperationsTests.cs
index 4112d201b..acd6ef23a 100644
--- a/tests/ImageSharp.Tests/PixelFormats/PixelOperations/PixelOperationsTests.Gray8OperationsTests.cs
+++ b/tests/ImageSharp.Tests/PixelFormats/PixelOperations/PixelOperationsTests.Gray8OperationsTests.cs
@@ -1,4 +1,7 @@
-using System;
+// Copyright (c) Six Labors and contributors.
+// Licensed under the Apache License, Version 2.0.
+
+using System;
 using System.Runtime.CompilerServices;
 using System.Runtime.InteropServices;
 
diff --git a/tests/ImageSharp.Tests/PixelFormats/PixelOperations/PixelOperationsTests.Rgb48OperationsTests.cs b/tests/ImageSharp.Tests/PixelFormats/PixelOperations/PixelOperationsTests.Rgb48OperationsTests.cs
index 68b67fce2..0a28db6b0 100644
--- a/tests/ImageSharp.Tests/PixelFormats/PixelOperations/PixelOperationsTests.Rgb48OperationsTests.cs
+++ b/tests/ImageSharp.Tests/PixelFormats/PixelOperations/PixelOperationsTests.Rgb48OperationsTests.cs
@@ -1,4 +1,7 @@
-using SixLabors.ImageSharp.PixelFormats;
+// Copyright (c) Six Labors and contributors.
+// Licensed under the Apache License, Version 2.0.
+
+using SixLabors.ImageSharp.PixelFormats;
 
 using Xunit;
 using Xunit.Abstractions;
diff --git a/tests/ImageSharp.Tests/PixelFormats/PixelOperations/PixelOperationsTests.Rgba32OperationsTests.cs b/tests/ImageSharp.Tests/PixelFormats/PixelOperations/PixelOperationsTests.Rgba32OperationsTests.cs
index 38cc97893..1ecbaf361 100644
--- a/tests/ImageSharp.Tests/PixelFormats/PixelOperations/PixelOperationsTests.Rgba32OperationsTests.cs
+++ b/tests/ImageSharp.Tests/PixelFormats/PixelOperations/PixelOperationsTests.Rgba32OperationsTests.cs
@@ -1,4 +1,7 @@
-using System.Buffers;
+// Copyright (c) Six Labors and contributors.
+// Licensed under the Apache License, Version 2.0.
+
+using System.Buffers;
 using System.Numerics;
 
 using SixLabors.ImageSharp.Memory;
diff --git a/tests/ImageSharp.Tests/PixelFormats/PixelOperations/PixelOperationsTests.Rgba64OperationsTests.cs b/tests/ImageSharp.Tests/PixelFormats/PixelOperations/PixelOperationsTests.Rgba64OperationsTests.cs
index 47738ac60..6787602bb 100644
--- a/tests/ImageSharp.Tests/PixelFormats/PixelOperations/PixelOperationsTests.Rgba64OperationsTests.cs
+++ b/tests/ImageSharp.Tests/PixelFormats/PixelOperations/PixelOperationsTests.Rgba64OperationsTests.cs
@@ -1,4 +1,7 @@
-using SixLabors.ImageSharp.PixelFormats;
+// Copyright (c) Six Labors and contributors.
+// Licensed under the Apache License, Version 2.0.
+
+using SixLabors.ImageSharp.PixelFormats;
 
 using Xunit;
 using Xunit.Abstractions;
diff --git a/tests/ImageSharp.Tests/PixelFormats/PixelOperations/PixelOperationsTests.RgbaVectorOperationsTests.cs b/tests/ImageSharp.Tests/PixelFormats/PixelOperations/PixelOperationsTests.RgbaVectorOperationsTests.cs
index 7272dfb78..f9cc042a7 100644
--- a/tests/ImageSharp.Tests/PixelFormats/PixelOperations/PixelOperationsTests.RgbaVectorOperationsTests.cs
+++ b/tests/ImageSharp.Tests/PixelFormats/PixelOperations/PixelOperationsTests.RgbaVectorOperationsTests.cs
@@ -1,4 +1,7 @@
-using SixLabors.ImageSharp.PixelFormats;
+// Copyright (c) Six Labors and contributors.
+// Licensed under the Apache License, Version 2.0.
+
+using SixLabors.ImageSharp.PixelFormats;
 
 using Xunit;
 using Xunit.Abstractions;