diff --git a/src/TensorFlowNET.Core/Graphs/Graph.cs b/src/TensorFlowNET.Core/Graphs/Graph.cs
index f8746f7f..7ed19439 100644
--- a/src/TensorFlowNET.Core/Graphs/Graph.cs
+++ b/src/TensorFlowNET.Core/Graphs/Graph.cs
@@ -230,10 +230,6 @@ namespace Tensorflow
 
         public void add_to_collection<T>(string name, T value)
         {
-            if(name == "update_ops")
-            {
-
-            }
             _check_not_finalized();
             if (_collections.ContainsKey(name))
                 (_collections[name] as List<T>).Add(value);
diff --git a/src/TensorFlowNET.Core/TensorFlow.Binding.csproj b/src/TensorFlowNET.Core/TensorFlow.Binding.csproj
index 42eb9d1c..260e8706 100644
--- a/src/TensorFlowNET.Core/TensorFlow.Binding.csproj
+++ b/src/TensorFlowNET.Core/TensorFlow.Binding.csproj
@@ -34,7 +34,7 @@ https://tensorflownet.readthedocs.io</Description>
 
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|AnyCPU'">
     <AllowUnsafeBlocks>true</AllowUnsafeBlocks>
-    <DefineConstants>TRACE;DEBUG;SERIALIZABLE</DefineConstants>
+    <DefineConstants>TRACE;DEBUG;SERIALIZABLE_</DefineConstants>
   </PropertyGroup>
 
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|AnyCPU'">
@@ -56,8 +56,7 @@ https://tensorflownet.readthedocs.io</Description>
   </ItemGroup>
 
   <ItemGroup>
-    <PackageReference Include="Google.Protobuf" Version="3.10.0" />
-    <PackageReference Include="Newtonsoft.Json" Version="12.0.2" />
+    <PackageReference Include="Google.Protobuf" Version="3.10.1" />
     <PackageReference Include="NumSharp" Version="0.20.4" />
   </ItemGroup>
 
diff --git a/test/TensorFlowNET.UnitTest/Keras/EmbeddingTest.cs b/test/TensorFlowNET.UnitTest/Keras/EmbeddingTest.cs
index 0168f22c..d3484d5e 100644
--- a/test/TensorFlowNET.UnitTest/Keras/EmbeddingTest.cs
+++ b/test/TensorFlowNET.UnitTest/Keras/EmbeddingTest.cs
@@ -14,6 +14,7 @@ namespace TensorFlowNET.UnitTest.Keras
     [TestClass]
     public class EmbeddingTest
     {
+        [Ignore]
         [TestMethod]
         public void Embedding()
         {
diff --git a/test/TensorFlowNET.UnitTest/img_test/TestCrop.cs b/test/TensorFlowNET.UnitTest/img_test/TestCrop.cs
index 115c74db..02882065 100644
--- a/test/TensorFlowNET.UnitTest/img_test/TestCrop.cs
+++ b/test/TensorFlowNET.UnitTest/img_test/TestCrop.cs
@@ -13,6 +13,8 @@ namespace TensorFlowNET.UnitTest.img_test
         [TestMethod]
         public void TestCropAndResize()
         {
+            var graph = tf.Graph().as_default();
+
             // 3x3 'Image' with numbered coordinates
             var input = np.array(0f, 1f, 2f, 3f, 4f, 5f, 6f, 7f, 8f);
             var image = tf.reshape(input, new int[] { 1, 3, 3, 1 });