diff --git a/README.md b/README.md
index 8dda25a..64605e5 100644
--- a/README.md
+++ b/README.md
@@ -1,7 +1,7 @@
 Xamarin PSPDFKit v4 Bindings
 ============================
 
-Xamarin.iOS Bindings for PSPDFKit `v4.4.7`
+Xamarin.iOS Bindings for PSPDFKit `v4.4.8`
 
 Building PSPDFKit.dll
 =====================
diff --git a/binding/PSPDFKit/ApiDefinition.cs b/binding/PSPDFKit/ApiDefinition.cs
index 0bffc82..3296553 100644
--- a/binding/PSPDFKit/ApiDefinition.cs
+++ b/binding/PSPDFKit/ApiDefinition.cs
@@ -9475,7 +9475,7 @@ interface PSPDFAnnotationGroupItem {
 	}
 
 	[BaseType (typeof (NSObject))]
-	interface PSPDFModel {
+	interface PSPDFModel : INSCopying, INSCoding {
 
 		[Static]
 		[Export ("modelWithDictionary:error:")]
@@ -9508,9 +9508,6 @@ interface PSPDFModel {
 
 		[Export ("mergeValuesForKeysFromModel:")]
 		void MergeValuesForKeysFromModel (PSPDFModel model);
-
-		[Export ("validate:")]
-		bool Validate (out NSError error);
 	}
 
 	[BaseType (typeof (PSPDFDocumentSharingCoordinator))]
diff --git a/binding/PSPDFKit/PSPDFKit b/binding/PSPDFKit/PSPDFKit
index cb19f84..b013932 100644
Binary files a/binding/PSPDFKit/PSPDFKit and b/binding/PSPDFKit/PSPDFKit differ