diff --git a/Android/ARCore/build.cake b/Android/ARCore/build.cake
index 65184a6897..c831763261 100644
--- a/Android/ARCore/build.cake
+++ b/Android/ARCore/build.cake
@@ -2,11 +2,11 @@
 
 var TARGET = Argument ("t", Argument ("target", "ci"));
 
-var NUGET_VERSION = "1.29.0";
+var NUGET_VERSION = "1.42.0";
 
-var AAR_VERSION = "1.29.0";
+var AAR_VERSION = "1.42.0";
 var AAR_URL = string.Format("https://dl.google.com/dl/android/maven2/com/google/ar/core/{0}/core-{0}.aar", AAR_VERSION);
-var OBJ_VERSION = "0.3.0";
+var OBJ_VERSION = "0.4.0";
 var OBJ_URL = string.Format("https://oss.sonatype.org/content/repositories/releases/de/javagl/obj/{0}/obj-{0}.jar", OBJ_VERSION);
 
 Task ("externals")
diff --git a/Android/ARCore/source/Additions/Additions.cs b/Android/ARCore/source/Additions/Additions.cs
index 1b47bddf13..d8297aee86 100644
--- a/Android/ARCore/source/Additions/Additions.cs
+++ b/Android/ARCore/source/Additions/Additions.cs
@@ -10,4 +10,20 @@ public partial class DepthPoint : Google.AR.Core.ITrackable {}
     public partial class InstantPlacementPoint : Google.AR.Core.ITrackable {}
     public partial class Plane : Google.AR.Core.ITrackable {}
     public partial class Point : Google.AR.Core.ITrackable {}
+
+    public partial class Earth
+    {
+        ~Earth()
+        {
+            InternalFinalize();
+        }
+    }
+
+    public partial class StreetscapeGeometry
+    {
+        ~StreetscapeGeometry()
+        {
+            InternalFinalize();
+        }
+    }
 }
diff --git a/Android/ARCore/source/Transforms/Metadata.xml b/Android/ARCore/source/Transforms/Metadata.xml
index 19f7a15c3a..1529aae01d 100644
--- a/Android/ARCore/source/Transforms/Metadata.xml
+++ b/Android/ARCore/source/Transforms/Metadata.xml
@@ -7,11 +7,11 @@
     <attr path="/api/package[@name='com.google.ar.core']/class[@name='ArImage']" name="extends">Android.Media.Image</attr>
     <!-- ?? -->
     <attr path="/api/package[@name='com.google.vr.dynamite.client']/class[@name='ObjectWrapper']" name="extends">Java.Lang.Object</attr>
-   	
-<!--  
-    <attr path="/api/package[@name='com.google.ar.core.services.downloads.aidl']" name="managedName">Google.AR.Core.Services.Downloads.AIDL</attr>
-    <attr path="/api/package[@name='com.google.ar.core.services.downloads.client']" name="managedName">Google.AR.Core.Services.Downloads.Client</attr>
--->
+
+    <!--  
+        <attr path="/api/package[@name='com.google.ar.core.services.downloads.aidl']" name="managedName">Google.AR.Core.Services.Downloads.AIDL</attr>
+        <attr path="/api/package[@name='com.google.ar.core.services.downloads.client']" name="managedName">Google.AR.Core.Services.Downloads.Client</attr>
+    -->
 
     <!-- Missing ITrackable inheritance
     not supported, moved into additions
@@ -24,23 +24,23 @@
     <attr path="/api/package[@name='com.google.ar.core']/class[@name='InstantPlacementPoint']/method[@name='getAnchors' and count(parameter)=0]" name="return">
         java.util.Collection&lt;com.google.ar.core.Anchor&gt;
     </attr>
-    
+
     <attr path="/api/package[@name='com.google.ar.core']/class[@name='AugmentedImage']/method[@name='getAnchors' and count(parameter)=0]" name="return">
         java.util.Collection&lt;com.google.ar.core.Anchor&gt;
     </attr>
-    
+
     <attr path="/api/package[@name='com.google.ar.core']/class[@name='Plane']/method[@name='getAnchors' and count(parameter)=0]" name="return">
         java.util.Collection&lt;com.google.ar.core.Anchor&gt;
     </attr>
-    
+
     <attr path="/api/package[@name='com.google.ar.core']/class[@name='Point']/method[@name='getAnchors' and count(parameter)=0]" name="return">
         java.util.Collection&lt;com.google.ar.core.Anchor&gt;
     </attr>
-    
+
     <attr path="/api/package[@name='com.google.ar.core']/class[@name='AugmentedFace']/method[@name='getAnchors' and count(parameter)=0]" name="return">
-      java.util.Collection&lt;com.google.ar.core.Anchor&gt;
+        java.util.Collection&lt;com.google.ar.core.Anchor&gt;
     </attr>
-    
+
     <attr path="/api/package[@name='com.google.ar.core']/class[@name='DepthPoint']/method[@name='getAnchors' and count(parameter)=0]" name="return">
         java.util.Collection&lt;com.google.ar.core.Anchor&gt;
     </attr>
@@ -50,5 +50,21 @@
     -->
     <attr path="/api/package[@name='com.google.ar.core']/class[@name='InstallActivity']/method[@name='onDestroy' and count(parameter)=0]" name="managedOverride">override</attr>
     <attr path="/api/package[@name='com.google.ar.core']/class[@name='InstallActivity']/method[@name='onDestroy' and count(parameter)=0]" name="visibility">protected</attr>
-    
-</metadata>
+
+    <!--
+	Implements a Java Finalizer. Instead implement a C# Destructor and call the finalize method.
+    The C# Destructor is in the partial class under the Addition folder.
+	-->
+    <attr path="/api/package[@name='com.google.ar.core']/class[@name='Earth']/method[@name='finalize' and count(parameter)=0]" name="managedName">InternalFinalize</attr>
+    <attr path="/api/package[@name='com.google.ar.core']/class[@name='Earth']/method[@name='finalize' and count(parameter)=0]" name="visibility">internal</attr>
+    <attr path="/api/package[@name='com.google.ar.core']/class[@name='StreetscapeGeometry']/method[@name='finalize' and count(parameter)=0]" name="managedName">InternalFinalize</attr>
+    <attr path="/api/package[@name='com.google.ar.core']/class[@name='StreetscapeGeometry']/method[@name='finalize' and count(parameter)=0]" name="visibility">internal</attr>
+
+    <!--
+	Duplicate method with a different return value
+    // Metadata.xml XPath method reference: path="/api/package[@name='com.google.ar.core']/class[@name='Earth']/method[@name='getAnchors' and count(parameter)=0]"
+	-->
+    <remove-node path="/api/package[@name='com.google.ar.core']/class[@name='TrackableBase']/method[@name='getAnchors' and count(parameter)=0]" />
+
+
+</metadata>
\ No newline at end of file