diff --git a/src/csharp/Grpc.IntegrationTesting/packages.config b/src/csharp/Grpc.IntegrationTesting/packages.config
index 5c59af1b7df7efb145885ea98b8b4030a232cf82..9d877d723b82e25955fb3561ce24ed6847ecc75d 100644
--- a/src/csharp/Grpc.IntegrationTesting/packages.config
+++ b/src/csharp/Grpc.IntegrationTesting/packages.config
@@ -5,7 +5,6 @@
   <package id="Google.Apis.Auth" version="1.9.3" targetFramework="net45" />
   <package id="Google.Apis.Core" version="1.9.3" targetFramework="net45" />
   <package id="Google.Protobuf" version="3.0.0-alpha4" targetFramework="net45" />
-  <package id="Google.ProtocolBuffers" version="2.4.1.521" targetFramework="net45" />
   <package id="Ix-Async" version="1.2.3" targetFramework="net45" />
   <package id="Microsoft.Bcl" version="1.1.10" targetFramework="net45" />
   <package id="Microsoft.Bcl.Async" version="1.0.168" targetFramework="net45" />