diff --git a/build/dependencies.props b/build/dependencies.props
index 953d1cc1aa..97d1862813 100644
--- a/build/dependencies.props
+++ b/build/dependencies.props
@@ -4,24 +4,24 @@
   </PropertyGroup>
   <PropertyGroup Label="Package Versions">
     <InternalAspNetCoreSdkPackageVersion>2.1.0-preview2-15728</InternalAspNetCoreSdkPackageVersion>
-    <MicrosoftAspNetCoreHostingAbstractionsPackageVersion>2.1.0-preview2-30272</MicrosoftAspNetCoreHostingAbstractionsPackageVersion>
-    <MicrosoftAspNetCoreHttpAbstractionsPackageVersion>2.1.0-preview2-30272</MicrosoftAspNetCoreHttpAbstractionsPackageVersion>
-    <MicrosoftAspNetCoreHttpExtensionsPackageVersion>2.1.0-preview2-30272</MicrosoftAspNetCoreHttpExtensionsPackageVersion>
-    <MicrosoftAspNetCoreHttpPackageVersion>2.1.0-preview2-30272</MicrosoftAspNetCoreHttpPackageVersion>
-    <MicrosoftAspNetCoreServerKestrelCorePackageVersion>2.1.0-preview2-30272</MicrosoftAspNetCoreServerKestrelCorePackageVersion>
-    <MicrosoftAspNetCoreServerKestrelHttpsPackageVersion>2.1.0-preview2-30272</MicrosoftAspNetCoreServerKestrelHttpsPackageVersion>
-    <MicrosoftAspNetCoreServerKestrelPackageVersion>2.1.0-preview2-30272</MicrosoftAspNetCoreServerKestrelPackageVersion>
-    <MicrosoftAspNetCoreTestHostPackageVersion>2.1.0-preview2-30272</MicrosoftAspNetCoreTestHostPackageVersion>
-    <MicrosoftExtensionsConfigurationAbstractionsPackageVersion>2.1.0-preview2-30272</MicrosoftExtensionsConfigurationAbstractionsPackageVersion>
-    <MicrosoftExtensionsConfigurationBinderPackageVersion>2.1.0-preview2-30272</MicrosoftExtensionsConfigurationBinderPackageVersion>
-    <MicrosoftExtensionsFileProvidersAbstractionsPackageVersion>2.1.0-preview2-30272</MicrosoftExtensionsFileProvidersAbstractionsPackageVersion>
-    <MicrosoftExtensionsLoggingAbstractionsPackageVersion>2.1.0-preview2-30272</MicrosoftExtensionsLoggingAbstractionsPackageVersion>
-    <MicrosoftExtensionsLoggingConsolePackageVersion>2.1.0-preview2-30272</MicrosoftExtensionsLoggingConsolePackageVersion>
-    <MicrosoftExtensionsLoggingTestingPackageVersion>2.1.0-preview2-30272</MicrosoftExtensionsLoggingTestingPackageVersion>
-    <MicrosoftExtensionsOptionsPackageVersion>2.1.0-preview2-30272</MicrosoftExtensionsOptionsPackageVersion>
+    <MicrosoftAspNetCoreHostingAbstractionsPackageVersion>2.1.0-preview2-30281</MicrosoftAspNetCoreHostingAbstractionsPackageVersion>
+    <MicrosoftAspNetCoreHttpAbstractionsPackageVersion>2.1.0-preview2-30281</MicrosoftAspNetCoreHttpAbstractionsPackageVersion>
+    <MicrosoftAspNetCoreHttpExtensionsPackageVersion>2.1.0-preview2-30281</MicrosoftAspNetCoreHttpExtensionsPackageVersion>
+    <MicrosoftAspNetCoreHttpPackageVersion>2.1.0-preview2-30281</MicrosoftAspNetCoreHttpPackageVersion>
+    <MicrosoftAspNetCoreServerKestrelCorePackageVersion>2.1.0-preview2-30281</MicrosoftAspNetCoreServerKestrelCorePackageVersion>
+    <MicrosoftAspNetCoreServerKestrelHttpsPackageVersion>2.1.0-preview2-30281</MicrosoftAspNetCoreServerKestrelHttpsPackageVersion>
+    <MicrosoftAspNetCoreServerKestrelPackageVersion>2.1.0-preview2-30281</MicrosoftAspNetCoreServerKestrelPackageVersion>
+    <MicrosoftAspNetCoreTestHostPackageVersion>2.1.0-preview2-30281</MicrosoftAspNetCoreTestHostPackageVersion>
+    <MicrosoftExtensionsConfigurationAbstractionsPackageVersion>2.1.0-preview2-30281</MicrosoftExtensionsConfigurationAbstractionsPackageVersion>
+    <MicrosoftExtensionsConfigurationBinderPackageVersion>2.1.0-preview2-30281</MicrosoftExtensionsConfigurationBinderPackageVersion>
+    <MicrosoftExtensionsFileProvidersAbstractionsPackageVersion>2.1.0-preview2-30281</MicrosoftExtensionsFileProvidersAbstractionsPackageVersion>
+    <MicrosoftExtensionsLoggingAbstractionsPackageVersion>2.1.0-preview2-30281</MicrosoftExtensionsLoggingAbstractionsPackageVersion>
+    <MicrosoftExtensionsLoggingConsolePackageVersion>2.1.0-preview2-30281</MicrosoftExtensionsLoggingConsolePackageVersion>
+    <MicrosoftExtensionsLoggingTestingPackageVersion>2.1.0-preview2-30281</MicrosoftExtensionsLoggingTestingPackageVersion>
+    <MicrosoftExtensionsOptionsPackageVersion>2.1.0-preview2-30281</MicrosoftExtensionsOptionsPackageVersion>
     <MicrosoftNETCoreApp20PackageVersion>2.0.0</MicrosoftNETCoreApp20PackageVersion>
-    <MicrosoftNETCoreApp21PackageVersion>2.1.0-preview2-26225-03</MicrosoftNETCoreApp21PackageVersion>
-    <MicrosoftNetHttpHeadersPackageVersion>2.1.0-preview2-30272</MicrosoftNetHttpHeadersPackageVersion>
+    <MicrosoftNETCoreApp21PackageVersion>2.1.0-preview2-26308-01</MicrosoftNETCoreApp21PackageVersion>
+    <MicrosoftNetHttpHeadersPackageVersion>2.1.0-preview2-30281</MicrosoftNetHttpHeadersPackageVersion>
     <MicrosoftNETTestSdkPackageVersion>15.6.0</MicrosoftNETTestSdkPackageVersion>
     <MoqPackageVersion>4.7.49</MoqPackageVersion>
     <XunitAnalyzersPackageVersion>0.8.0</XunitAnalyzersPackageVersion>
diff --git a/test/Microsoft.AspNetCore.ResponseCompression.Tests/BodyWrapperStreamTests.cs b/test/Microsoft.AspNetCore.ResponseCompression.Tests/BodyWrapperStreamTests.cs
index 46c7fb46d3..4ffd70b745 100644
--- a/test/Microsoft.AspNetCore.ResponseCompression.Tests/BodyWrapperStreamTests.cs
+++ b/test/Microsoft.AspNetCore.ResponseCompression.Tests/BodyWrapperStreamTests.cs
@@ -65,47 +65,29 @@ namespace Microsoft.AspNetCore.ResponseCompression.Tests
         public async Task WriteAsync_IsPassedToUnderlyingStream_WhenDisableResponseBuffering(bool flushable)
         {
             var buffer = new byte[] { 1 };
-            byte[] written = null;
 
-            var mock = new Mock<Stream>();
-            mock.SetupGet(s => s.CanWrite).Returns(true);
-            mock.Setup(s => s.WriteAsync(It.IsAny<byte[]>(), It.IsAny<int>(), It.IsAny<int>(), It.IsAny<CancellationToken>()))
-                .Callback<byte[], int, int, CancellationToken>((b, o, c, t) =>
-                {
-                    written = new ArraySegment<byte>(b, 0, c).ToArray();
-                })
-                .Returns(Task.FromResult(0));
-
-            var stream = new BodyWrapperStream(new DefaultHttpContext(), mock.Object, new MockResponseCompressionProvider(flushable), null, null);
+            var memoryStream = new MemoryStream();
+            var stream = new BodyWrapperStream(new DefaultHttpContext(), memoryStream, new MockResponseCompressionProvider(flushable), null, null);
 
             stream.DisableResponseBuffering();
             await stream.WriteAsync(buffer, 0, buffer.Length);
 
-            Assert.Equal(buffer, written);
+            Assert.Equal(buffer, memoryStream.ToArray());
         }
 
         [Fact]
         public async Task SendFileAsync_IsPassedToUnderlyingStream_WhenDisableResponseBuffering()
         {
-            byte[] written = null;
+            var memoryStream = new MemoryStream();
 
-            var mock = new Mock<Stream>();
-            mock.SetupGet(s => s.CanWrite).Returns(true);
-            mock.Setup(s => s.WriteAsync(It.IsAny<byte[]>(), It.IsAny<int>(), It.IsAny<int>(), It.IsAny<CancellationToken>()))
-                .Callback<byte[], int, int, CancellationToken>((b, o, c, t) =>
-                {
-                    written = new ArraySegment<byte>(b, 0, c).ToArray();
-                })
-                .Returns(Task.FromResult(0));
-
-            var stream = new BodyWrapperStream(new DefaultHttpContext(), mock.Object, new MockResponseCompressionProvider(true), null, null);
+            var stream = new BodyWrapperStream(new DefaultHttpContext(), memoryStream, new MockResponseCompressionProvider(true), null, null);
 
             stream.DisableResponseBuffering();
 
             var path = "testfile1kb.txt";
             await stream.SendFileAsync(path, 0, null, CancellationToken.None);
 
-            Assert.Equal(File.ReadAllBytes(path), written);
+            Assert.Equal(File.ReadAllBytes(path), memoryStream.ToArray());
         }
 
         [Theory]
@@ -114,23 +96,15 @@ namespace Microsoft.AspNetCore.ResponseCompression.Tests
         public void BeginWrite_IsPassedToUnderlyingStream_WhenDisableResponseBuffering(bool flushable)
         {
             var buffer = new byte[] { 1 };
-            byte[] written = null;
 
-            var mock = new Mock<Stream>();
-            mock.SetupGet(s => s.CanWrite).Returns(true);
-            mock.Setup(s => s.WriteAsync(It.IsAny<byte[]>(), It.IsAny<int>(), It.IsAny<int>(), It.IsAny<CancellationToken>()))
-                .Callback<byte[], int, int, CancellationToken>((b, o, c, t) =>
-                {
-                    written = new ArraySegment<byte>(b, 0, c).ToArray();
-                })
-            .Returns(Task.FromResult(0));
+            var memoryStream = new MemoryStream();
 
-            var stream = new BodyWrapperStream(new DefaultHttpContext(), mock.Object, new MockResponseCompressionProvider(flushable), null, null);
+            var stream = new BodyWrapperStream(new DefaultHttpContext(), memoryStream, new MockResponseCompressionProvider(flushable), null, null);
 
             stream.DisableResponseBuffering();
             stream.BeginWrite(buffer, 0, buffer.Length, (o) => {}, null);
 
-            Assert.Equal(buffer, written);
+            Assert.Equal(buffer, memoryStream.ToArray());
         }
 
         private class MockResponseCompressionProvider: IResponseCompressionProvider