diff --git a/src/Markup/Perspex.Markup.Xaml/OmniXAML b/src/Markup/Perspex.Markup.Xaml/OmniXAML
index 27005c8b4d..5209a3f262 160000
--- a/src/Markup/Perspex.Markup.Xaml/OmniXAML
+++ b/src/Markup/Perspex.Markup.Xaml/OmniXAML
@@ -1 +1 @@
-Subproject commit 27005c8b4d41f2a6d3b85da7eb6ed994b57e0138
+Subproject commit 5209a3f26268fc55b82fbf8a05fbedce160e230f
diff --git a/src/Perspex.Controls/Properties/AssemblyInfo.cs b/src/Perspex.Controls/Properties/AssemblyInfo.cs
index 7c0a189889..898bc92b87 100644
--- a/src/Perspex.Controls/Properties/AssemblyInfo.cs
+++ b/src/Perspex.Controls/Properties/AssemblyInfo.cs
@@ -11,4 +11,5 @@ using Perspex.Metadata;
 [assembly: XmlnsDefinition("https://github.com/perspex", "Perspex.Controls")]
 [assembly: XmlnsDefinition("https://github.com/perspex", "Perspex.Controls.Presenters")]
 [assembly: XmlnsDefinition("https://github.com/perspex", "Perspex.Controls.Primitives")]
-[assembly: XmlnsDefinition("https://github.com/perspex", "Perspex.Controls.Shapes")]
\ No newline at end of file
+[assembly: XmlnsDefinition("https://github.com/perspex", "Perspex.Controls.Shapes")]
+[assembly: XmlnsDefinition("https://github.com/perspex", "Perspex.Controls.Templates")]
\ No newline at end of file
diff --git a/src/Perspex.SceneGraph/Properties/AssemblyInfo.cs b/src/Perspex.SceneGraph/Properties/AssemblyInfo.cs
index bfe8371a52..e7138be6ab 100644
--- a/src/Perspex.SceneGraph/Properties/AssemblyInfo.cs
+++ b/src/Perspex.SceneGraph/Properties/AssemblyInfo.cs
@@ -5,4 +5,5 @@ using System.Reflection;
 using Perspex.Metadata;
 
 [assembly: AssemblyTitle("Perspex.SceneGraph")]
+[assembly: XmlnsDefinition("https://github.com/perspex", "Perspex.Animation")]
 [assembly: XmlnsDefinition("https://github.com/perspex", "Perspex.Media")]
\ No newline at end of file