bump C# package versions
diff --git a/vsprojects/nuget_package/grpc.native.csharp_ext.nuspec b/vsprojects/nuget_package/grpc.native.csharp_ext.nuspec
index 2527f4c..211d747 100644
--- a/vsprojects/nuget_package/grpc.native.csharp_ext.nuspec
+++ b/vsprojects/nuget_package/grpc.native.csharp_ext.nuspec
@@ -2,14 +2,14 @@
 <package>
   <metadata>
     <id>grpc.native.csharp_ext</id>
-    <version>0.9.0.0</version>
+    <version>0.9.1</version>
     <authors>Google Inc.</authors>
     <owners>grpc-packages</owners>
     <licenseUrl>https://github.com/grpc/grpc/blob/master/LICENSE</licenseUrl>
     <projectUrl>http://github.com/grpc/grpc</projectUrl>
     <requireLicenseAcceptance>false</requireLicenseAcceptance>
     <description>Native extension needed by gRPC C# library. This is not the package you are looking for, it is only meant to be used as a dependency.</description>
-    <releaseNotes>Release of gRPC C core 0.9.0 libraries.</releaseNotes>
+    <releaseNotes>Release of gRPC C core 0.9.1 libraries.</releaseNotes>
     <copyright>Copyright 2015</copyright>
     <title>gRPC C# Native Extension</title>
     <summary>Native library required by gRPC C#</summary>
@@ -27,4 +27,4 @@
     <file src="output\v100\Win32\Debug\grpc_csharp_ext.dll" target="/build/native/bin/v100\Win32\Debug\grpc_csharp_ext.dll" />
     <file src="output\v120\Win32\Debug\grpc_csharp_ext.dll" target="/build/native/bin/v120\Win32\Debug\grpc_csharp_ext.dll" />
   </files>
-</package>
\ No newline at end of file
+</package>