diff --git a/src/Avalonia.Animation/DoubleAnimator.cs b/src/Avalonia.Animation/DoubleAnimator.cs
index aeeb29a7dd..2e0ce64185 100644
--- a/src/Avalonia.Animation/DoubleAnimator.cs
+++ b/src/Avalonia.Animation/DoubleAnimator.cs
@@ -1,4 +1,7 @@
-namespace Avalonia.Animation
+// Copyright (c) The Avalonia Project. All rights reserved.
+// Licensed under the MIT license. See licence.md file in the project root for full license information.
+
+namespace Avalonia.Animation
 {
     /// <summary>
     /// Animator that handles <see cref="double"/> properties.
diff --git a/src/Avalonia.Animation/FillMode.cs b/src/Avalonia.Animation/FillMode.cs
index 001e1cdeb4..39beecf455 100644
--- a/src/Avalonia.Animation/FillMode.cs
+++ b/src/Avalonia.Animation/FillMode.cs
@@ -1,4 +1,7 @@
-namespace Avalonia.Animation
+// Copyright (c) The Avalonia Project. All rights reserved.
+// Licensed under the MIT license. See licence.md file in the project root for full license information.
+
+namespace Avalonia.Animation
 {
     public enum FillMode
     {
diff --git a/src/Avalonia.Animation/IAnimation.cs b/src/Avalonia.Animation/IAnimation.cs
index 1d545a322a..831391ce46 100644
--- a/src/Avalonia.Animation/IAnimation.cs
+++ b/src/Avalonia.Animation/IAnimation.cs
@@ -1,3 +1,6 @@
+// Copyright (c) The Avalonia Project. All rights reserved.
+// Licensed under the MIT license. See licence.md file in the project root for full license information.
+
 using System;
 using System.Threading.Tasks;
 
diff --git a/src/Avalonia.Animation/IAnimationSetter.cs b/src/Avalonia.Animation/IAnimationSetter.cs
index 2d22377286..9c8365ea37 100644
--- a/src/Avalonia.Animation/IAnimationSetter.cs
+++ b/src/Avalonia.Animation/IAnimationSetter.cs
@@ -1,3 +1,6 @@
+// Copyright (c) The Avalonia Project. All rights reserved.
+// Licensed under the MIT license. See licence.md file in the project root for full license information.
+
 namespace Avalonia.Animation
 {
     public interface IAnimationSetter
diff --git a/src/Avalonia.Animation/IAnimator.cs b/src/Avalonia.Animation/IAnimator.cs
index 9a4da35a02..0f26b7dc2f 100644
--- a/src/Avalonia.Animation/IAnimator.cs
+++ b/src/Avalonia.Animation/IAnimator.cs
@@ -1,4 +1,7 @@
-using System;
+// Copyright (c) The Avalonia Project. All rights reserved.
+// Licensed under the MIT license. See licence.md file in the project root for full license information.
+
+using System;
 using System.Collections.Generic;
 
 namespace Avalonia.Animation
diff --git a/src/Avalonia.Animation/KeyFrame.cs b/src/Avalonia.Animation/KeyFrame.cs
index 5eb0d2e901..44e39e042e 100644
--- a/src/Avalonia.Animation/KeyFrame.cs
+++ b/src/Avalonia.Animation/KeyFrame.cs
@@ -1,4 +1,7 @@
-using System;
+// Copyright (c) The Avalonia Project. All rights reserved.
+// Licensed under the MIT license. See licence.md file in the project root for full license information.
+
+using System;
 using System.Collections.Generic;
 using Avalonia.Collections;
 
diff --git a/src/Avalonia.Animation/KeyFramePair`1.cs b/src/Avalonia.Animation/KeyFramePair`1.cs
index b0622a1580..60a16d094f 100644
--- a/src/Avalonia.Animation/KeyFramePair`1.cs
+++ b/src/Avalonia.Animation/KeyFramePair`1.cs
@@ -1,3 +1,6 @@
+// Copyright (c) The Avalonia Project. All rights reserved.
+// Licensed under the MIT license. See licence.md file in the project root for full license information.
+
 namespace Avalonia.Animation
 {
     /// <summary>
diff --git a/src/Avalonia.Animation/PlayState.cs b/src/Avalonia.Animation/PlayState.cs
index 313d33d586..8d28f06eb1 100644
--- a/src/Avalonia.Animation/PlayState.cs
+++ b/src/Avalonia.Animation/PlayState.cs
@@ -1,4 +1,7 @@
-namespace Avalonia.Animation
+// Copyright (c) The Avalonia Project. All rights reserved.
+// Licensed under the MIT license. See licence.md file in the project root for full license information.
+
+namespace Avalonia.Animation
 {
     /// <summary>
     /// Determines the playback state of an animation.
diff --git a/src/Avalonia.Animation/PlaybackDirection.cs b/src/Avalonia.Animation/PlaybackDirection.cs
index bbce6106e1..a44dd388ae 100644
--- a/src/Avalonia.Animation/PlaybackDirection.cs
+++ b/src/Avalonia.Animation/PlaybackDirection.cs
@@ -1,4 +1,7 @@
-namespace Avalonia.Animation
+// Copyright (c) The Avalonia Project. All rights reserved.
+// Licensed under the MIT license. See licence.md file in the project root for full license information.
+
+namespace Avalonia.Animation
 {
     /// <summary>
     /// Determines the playback direction of an animation.