diff --git a/doc/health-checking.md b/doc/health-checking.md
index 0b3f9c6a034c43e45859086b5a39d3acb12ab370..92512e942bd90f7d03bd1f3e6db4f48795f0a959 100644
--- a/doc/health-checking.md
+++ b/doc/health-checking.md
@@ -26,7 +26,7 @@ The server should export a service defined in the following proto:
 ```
 syntax = "proto3";
 
-package grpc.health.v1alpha;
+package grpc.health.v1;
 
 message HealthCheckRequest {
   string service = 1;
@@ -49,7 +49,7 @@ service Health {
 A client can query the server’s health status by calling the `Check` method, and
 a deadline should be set on the rpc. The client can optionally set the service
 name it wants to query for health status. The suggested format of service name
-is `package_names.ServiceName`, such as `grpc.health.v1alpha.Health`.
+is `package_names.ServiceName`, such as `grpc.health.v1.Health`.
 
 The server should register all the services manually and set
 the individual status, including an empty service name and its status. For each
diff --git a/src/csharp/Grpc.HealthCheck.Tests/HealthClientServerTest.cs b/src/csharp/Grpc.HealthCheck.Tests/HealthClientServerTest.cs
index a8a76c749229468a56bd246d39ca2c7cdc19e087..c3fac05324c8245694c425eb88cab306dcc7f641 100644
--- a/src/csharp/Grpc.HealthCheck.Tests/HealthClientServerTest.cs
+++ b/src/csharp/Grpc.HealthCheck.Tests/HealthClientServerTest.cs
@@ -36,7 +36,7 @@ using System.Text;
 using System.Threading.Tasks;
 
 using Grpc.Core;
-using Grpc.Health.V1Alpha;
+using Grpc.Health.V1;
 using NUnit.Framework;
 
 namespace Grpc.HealthCheck.Tests
@@ -49,7 +49,7 @@ namespace Grpc.HealthCheck.Tests
         const string Host = "localhost";
         Server server;
         Channel channel;
-        Grpc.Health.V1Alpha.Health.IHealthClient client;
+        Grpc.Health.V1.Health.IHealthClient client;
         Grpc.HealthCheck.HealthServiceImpl serviceImpl;
 
         [TestFixtureSetUp]
@@ -59,13 +59,13 @@ namespace Grpc.HealthCheck.Tests
 
             server = new Server
             {
-                Services = { Grpc.Health.V1Alpha.Health.BindService(serviceImpl) },
+                Services = { Grpc.Health.V1.Health.BindService(serviceImpl) },
                 Ports = { { Host, ServerPort.PickUnused, ServerCredentials.Insecure } }
             };
             server.Start();
             channel = new Channel(Host, server.Ports.Single().BoundPort, ChannelCredentials.Insecure);
 
-            client = Grpc.Health.V1Alpha.Health.NewClient(channel);
+            client = Grpc.Health.V1.Health.NewClient(channel);
         }
 
         [TestFixtureTearDown]
@@ -79,16 +79,16 @@ namespace Grpc.HealthCheck.Tests
         [Test]
         public void ServiceIsRunning()
         {
-            serviceImpl.SetStatus("", "", HealthCheckResponse.Types.ServingStatus.SERVING);
+            serviceImpl.SetStatus("", HealthCheckResponse.Types.ServingStatus.SERVING);
 
-            var response = client.Check(new HealthCheckRequest { Host = "", Service = "" });
+            var response = client.Check(new HealthCheckRequest { Service = "" });
             Assert.AreEqual(HealthCheckResponse.Types.ServingStatus.SERVING, response.Status);
         }
 
         [Test]
         public void ServiceDoesntExist()
         {
-            Assert.Throws(Is.TypeOf(typeof(RpcException)).And.Property("Status").Property("StatusCode").EqualTo(StatusCode.NotFound), () => client.Check(new HealthCheckRequest { Host = "", Service = "nonexistent.service" }));
+            Assert.Throws(Is.TypeOf(typeof(RpcException)).And.Property("Status").Property("StatusCode").EqualTo(StatusCode.NotFound), () => client.Check(new HealthCheckRequest { Service = "nonexistent.service" }));
         }
 
         // TODO(jtattermusch): add test with timeout once timeouts are supported
diff --git a/src/csharp/Grpc.HealthCheck.Tests/HealthServiceImplTest.cs b/src/csharp/Grpc.HealthCheck.Tests/HealthServiceImplTest.cs
index 2097c0dc8cf7daa2c79f72a4706299af0ee76d0d..47e4b7c2a70194bb84232f42db9588756c6dffca 100644
--- a/src/csharp/Grpc.HealthCheck.Tests/HealthServiceImplTest.cs
+++ b/src/csharp/Grpc.HealthCheck.Tests/HealthServiceImplTest.cs
@@ -1,5 +1,5 @@
 #region Copyright notice and license
-// Copyright 2015, Google Inc.
+// Copyright 2015-2016, Google Inc.
 // All rights reserved.
 //
 // Redistribution and use in source and binary forms, with or without
@@ -36,7 +36,7 @@ using System.Text;
 using System.Threading.Tasks;
 
 using Grpc.Core;
-using Grpc.Health.V1Alpha;
+using Grpc.Health.V1;
 using NUnit.Framework;
 
 namespace Grpc.HealthCheck.Tests
@@ -50,58 +50,56 @@ namespace Grpc.HealthCheck.Tests
         public void SetStatus()
         {
             var impl = new HealthServiceImpl();
-            impl.SetStatus("", "", HealthCheckResponse.Types.ServingStatus.SERVING);
-            Assert.AreEqual(HealthCheckResponse.Types.ServingStatus.SERVING, GetStatusHelper(impl, "", ""));
+            impl.SetStatus("", HealthCheckResponse.Types.ServingStatus.SERVING);
+            Assert.AreEqual(HealthCheckResponse.Types.ServingStatus.SERVING, GetStatusHelper(impl, ""));
 
-            impl.SetStatus("", "", HealthCheckResponse.Types.ServingStatus.NOT_SERVING);
-            Assert.AreEqual(HealthCheckResponse.Types.ServingStatus.NOT_SERVING, GetStatusHelper(impl, "", ""));
+            impl.SetStatus("", HealthCheckResponse.Types.ServingStatus.NOT_SERVING);
+            Assert.AreEqual(HealthCheckResponse.Types.ServingStatus.NOT_SERVING, GetStatusHelper(impl, ""));
 
-            impl.SetStatus("virtual-host", "", HealthCheckResponse.Types.ServingStatus.UNKNOWN);
-            Assert.AreEqual(HealthCheckResponse.Types.ServingStatus.UNKNOWN, GetStatusHelper(impl, "virtual-host", ""));
+            impl.SetStatus("", HealthCheckResponse.Types.ServingStatus.UNKNOWN);
+            Assert.AreEqual(HealthCheckResponse.Types.ServingStatus.UNKNOWN, GetStatusHelper(impl, ""));
 
-            impl.SetStatus("virtual-host", "grpc.test.TestService", HealthCheckResponse.Types.ServingStatus.SERVING);
-            Assert.AreEqual(HealthCheckResponse.Types.ServingStatus.SERVING, GetStatusHelper(impl, "virtual-host", "grpc.test.TestService"));
+            impl.SetStatus("grpc.test.TestService", HealthCheckResponse.Types.ServingStatus.SERVING);
+            Assert.AreEqual(HealthCheckResponse.Types.ServingStatus.SERVING, GetStatusHelper(impl, "grpc.test.TestService"));
         }
 
         [Test]
         public void ClearStatus()
         {
             var impl = new HealthServiceImpl();
-            impl.SetStatus("", "", HealthCheckResponse.Types.ServingStatus.SERVING);
-            impl.SetStatus("virtual-host", "", HealthCheckResponse.Types.ServingStatus.UNKNOWN);
+            impl.SetStatus("", HealthCheckResponse.Types.ServingStatus.SERVING);
+            impl.SetStatus("grpc.test.TestService", HealthCheckResponse.Types.ServingStatus.UNKNOWN);
 
-            impl.ClearStatus("", "");
+            impl.ClearStatus("");
 
-            Assert.Throws(Is.TypeOf(typeof(RpcException)).And.Property("Status").Property("StatusCode").EqualTo(StatusCode.NotFound), () => GetStatusHelper(impl, "", ""));
-            Assert.AreEqual(HealthCheckResponse.Types.ServingStatus.UNKNOWN, GetStatusHelper(impl, "virtual-host", ""));
+            Assert.Throws(Is.TypeOf(typeof(RpcException)).And.Property("Status").Property("StatusCode").EqualTo(StatusCode.NotFound), () => GetStatusHelper(impl, ""));
+            Assert.AreEqual(HealthCheckResponse.Types.ServingStatus.UNKNOWN, GetStatusHelper(impl, "grpc.test.TestService"));
         }
 
         [Test]
         public void ClearAll()
         {
             var impl = new HealthServiceImpl();
-            impl.SetStatus("", "", HealthCheckResponse.Types.ServingStatus.SERVING);
-            impl.SetStatus("virtual-host", "", HealthCheckResponse.Types.ServingStatus.UNKNOWN);
+            impl.SetStatus("", HealthCheckResponse.Types.ServingStatus.SERVING);
+            impl.SetStatus("grpc.test.TestService", HealthCheckResponse.Types.ServingStatus.UNKNOWN);
 
             impl.ClearAll();
-            Assert.Throws(typeof(RpcException), () => GetStatusHelper(impl, "", ""));
-            Assert.Throws(typeof(RpcException), () => GetStatusHelper(impl, "virtual-host", ""));
+            Assert.Throws(typeof(RpcException), () => GetStatusHelper(impl, ""));
+            Assert.Throws(typeof(RpcException), () => GetStatusHelper(impl, "grpc.test.TestService"));
         }
 
         [Test]
         public void NullsRejected()
         {
             var impl = new HealthServiceImpl();
-            Assert.Throws(typeof(ArgumentNullException), () => impl.SetStatus(null, "", HealthCheckResponse.Types.ServingStatus.SERVING));
-            Assert.Throws(typeof(ArgumentNullException), () => impl.SetStatus("", null, HealthCheckResponse.Types.ServingStatus.SERVING));
+            Assert.Throws(typeof(ArgumentNullException), () => impl.SetStatus(null, HealthCheckResponse.Types.ServingStatus.SERVING));
 
-            Assert.Throws(typeof(ArgumentNullException), () => impl.ClearStatus(null, ""));
-            Assert.Throws(typeof(ArgumentNullException), () => impl.ClearStatus("", null));
+            Assert.Throws(typeof(ArgumentNullException), () => impl.ClearStatus(null));
         }
 
-        private static HealthCheckResponse.Types.ServingStatus GetStatusHelper(HealthServiceImpl impl, string host, string service)
+        private static HealthCheckResponse.Types.ServingStatus GetStatusHelper(HealthServiceImpl impl, string service)
         {
-            return impl.Check(new HealthCheckRequest { Host = host, Service = service }, null).Result.Status;
+            return impl.Check(new HealthCheckRequest { Service = service }, null).Result.Status;
         }
     }
 }
diff --git a/src/csharp/Grpc.HealthCheck/Grpc.HealthCheck.nuspec b/src/csharp/Grpc.HealthCheck/Grpc.HealthCheck.nuspec
index 66386288df132f448b0dee70305b15ae41e0c824..7b3b391009eb05ca1ba9a85aceec8b829d22939b 100644
--- a/src/csharp/Grpc.HealthCheck/Grpc.HealthCheck.nuspec
+++ b/src/csharp/Grpc.HealthCheck/Grpc.HealthCheck.nuspec
@@ -4,7 +4,7 @@
     <id>Grpc.HealthCheck</id>
     <title>gRPC C# Healthchecking</title>
     <summary>Implementation of gRPC health service</summary>
-    <description>Example implementation of grpc.health.v1alpha service that can be used for health-checking.</description>
+    <description>Example implementation of grpc.health.v1 service that can be used for health-checking.</description>
     <version>$version$</version>
     <authors>Google Inc.</authors>
     <owners>grpc-packages</owners>
diff --git a/src/csharp/Grpc.HealthCheck/Health.cs b/src/csharp/Grpc.HealthCheck/Health.cs
index 56673f1adf699bef3998cae252799bcbe7d3bfe5..d0d0c0b519665376069e283e7ae90f347c4b127a 100644
--- a/src/csharp/Grpc.HealthCheck/Health.cs
+++ b/src/csharp/Grpc.HealthCheck/Health.cs
@@ -7,7 +7,7 @@ using pb = global::Google.Protobuf;
 using pbc = global::Google.Protobuf.Collections;
 using pbr = global::Google.Protobuf.Reflection;
 using scg = global::System.Collections.Generic;
-namespace Grpc.Health.V1Alpha {
+namespace Grpc.Health.V1 {
 
   /// <summary>Holder for reflection information generated from health.proto</summary>
   [global::System.Diagnostics.DebuggerNonUserCodeAttribute()]
@@ -23,20 +23,19 @@ namespace Grpc.Health.V1Alpha {
     static HealthReflection() {
       byte[] descriptorData = global::System.Convert.FromBase64String(
           string.Concat(
-            "CgxoZWFsdGgucHJvdG8SE2dycGMuaGVhbHRoLnYxYWxwaGEiMwoSSGVhbHRo",
-            "Q2hlY2tSZXF1ZXN0EgwKBGhvc3QYASABKAkSDwoHc2VydmljZRgCIAEoCSKZ",
-            "AQoTSGVhbHRoQ2hlY2tSZXNwb25zZRJGCgZzdGF0dXMYASABKA4yNi5ncnBj",
-            "LmhlYWx0aC52MWFscGhhLkhlYWx0aENoZWNrUmVzcG9uc2UuU2VydmluZ1N0",
-            "YXR1cyI6Cg1TZXJ2aW5nU3RhdHVzEgsKB1VOS05PV04QABILCgdTRVJWSU5H",
-            "EAESDwoLTk9UX1NFUlZJTkcQAjJkCgZIZWFsdGgSWgoFQ2hlY2sSJy5ncnBj",
-            "LmhlYWx0aC52MWFscGhhLkhlYWx0aENoZWNrUmVxdWVzdBooLmdycGMuaGVh",
-            "bHRoLnYxYWxwaGEuSGVhbHRoQ2hlY2tSZXNwb25zZUIWqgITR3JwYy5IZWFs",
-            "dGguVjFBbHBoYWIGcHJvdG8z"));
+            "CgxoZWFsdGgucHJvdG8SDmdycGMuaGVhbHRoLnYxIiUKEkhlYWx0aENoZWNr",
+            "UmVxdWVzdBIPCgdzZXJ2aWNlGAEgASgJIpQBChNIZWFsdGhDaGVja1Jlc3Bv",
+            "bnNlEkEKBnN0YXR1cxgBIAEoDjIxLmdycGMuaGVhbHRoLnYxLkhlYWx0aENo",
+            "ZWNrUmVzcG9uc2UuU2VydmluZ1N0YXR1cyI6Cg1TZXJ2aW5nU3RhdHVzEgsK",
+            "B1VOS05PV04QABILCgdTRVJWSU5HEAESDwoLTk9UX1NFUlZJTkcQAjJaCgZI",
+            "ZWFsdGgSUAoFQ2hlY2sSIi5ncnBjLmhlYWx0aC52MS5IZWFsdGhDaGVja1Jl",
+            "cXVlc3QaIy5ncnBjLmhlYWx0aC52MS5IZWFsdGhDaGVja1Jlc3BvbnNlQhGq",
+            "Ag5HcnBjLkhlYWx0aC5WMWIGcHJvdG8z"));
       descriptor = pbr::FileDescriptor.FromGeneratedCode(descriptorData,
           new pbr::FileDescriptor[] { },
           new pbr::GeneratedCodeInfo(null, new pbr::GeneratedCodeInfo[] {
-            new pbr::GeneratedCodeInfo(typeof(global::Grpc.Health.V1Alpha.HealthCheckRequest), global::Grpc.Health.V1Alpha.HealthCheckRequest.Parser, new[]{ "Host", "Service" }, null, null, null),
-            new pbr::GeneratedCodeInfo(typeof(global::Grpc.Health.V1Alpha.HealthCheckResponse), global::Grpc.Health.V1Alpha.HealthCheckResponse.Parser, new[]{ "Status" }, null, new[]{ typeof(global::Grpc.Health.V1Alpha.HealthCheckResponse.Types.ServingStatus) }, null)
+            new pbr::GeneratedCodeInfo(typeof(global::Grpc.Health.V1.HealthCheckRequest), global::Grpc.Health.V1.HealthCheckRequest.Parser, new[]{ "Service" }, null, null, null),
+            new pbr::GeneratedCodeInfo(typeof(global::Grpc.Health.V1.HealthCheckResponse), global::Grpc.Health.V1.HealthCheckResponse.Parser, new[]{ "Status" }, null, new[]{ typeof(global::Grpc.Health.V1.HealthCheckResponse.Types.ServingStatus) }, null)
           }));
     }
     #endregion
@@ -49,7 +48,7 @@ namespace Grpc.Health.V1Alpha {
     public static pb::MessageParser<HealthCheckRequest> Parser { get { return _parser; } }
 
     public static pbr::MessageDescriptor Descriptor {
-      get { return global::Grpc.Health.V1Alpha.HealthReflection.Descriptor.MessageTypes[0]; }
+      get { return global::Grpc.Health.V1.HealthReflection.Descriptor.MessageTypes[0]; }
     }
 
     pbr::MessageDescriptor pb::IMessage.Descriptor {
@@ -63,7 +62,6 @@ namespace Grpc.Health.V1Alpha {
     partial void OnConstruction();
 
     public HealthCheckRequest(HealthCheckRequest other) : this() {
-      host_ = other.host_;
       service_ = other.service_;
     }
 
@@ -71,18 +69,8 @@ namespace Grpc.Health.V1Alpha {
       return new HealthCheckRequest(this);
     }
 
-    /// <summary>Field number for the "host" field.</summary>
-    public const int HostFieldNumber = 1;
-    private string host_ = "";
-    public string Host {
-      get { return host_; }
-      set {
-        host_ = pb::Preconditions.CheckNotNull(value, "value");
-      }
-    }
-
     /// <summary>Field number for the "service" field.</summary>
-    public const int ServiceFieldNumber = 2;
+    public const int ServiceFieldNumber = 1;
     private string service_ = "";
     public string Service {
       get { return service_; }
@@ -102,14 +90,12 @@ namespace Grpc.Health.V1Alpha {
       if (ReferenceEquals(other, this)) {
         return true;
       }
-      if (Host != other.Host) return false;
       if (Service != other.Service) return false;
       return true;
     }
 
     public override int GetHashCode() {
       int hash = 1;
-      if (Host.Length != 0) hash ^= Host.GetHashCode();
       if (Service.Length != 0) hash ^= Service.GetHashCode();
       return hash;
     }
@@ -119,21 +105,14 @@ namespace Grpc.Health.V1Alpha {
     }
 
     public void WriteTo(pb::CodedOutputStream output) {
-      if (Host.Length != 0) {
-        output.WriteRawTag(10);
-        output.WriteString(Host);
-      }
       if (Service.Length != 0) {
-        output.WriteRawTag(18);
+        output.WriteRawTag(10);
         output.WriteString(Service);
       }
     }
 
     public int CalculateSize() {
       int size = 0;
-      if (Host.Length != 0) {
-        size += 1 + pb::CodedOutputStream.ComputeStringSize(Host);
-      }
       if (Service.Length != 0) {
         size += 1 + pb::CodedOutputStream.ComputeStringSize(Service);
       }
@@ -144,9 +123,6 @@ namespace Grpc.Health.V1Alpha {
       if (other == null) {
         return;
       }
-      if (other.Host.Length != 0) {
-        Host = other.Host;
-      }
       if (other.Service.Length != 0) {
         Service = other.Service;
       }
@@ -160,10 +136,6 @@ namespace Grpc.Health.V1Alpha {
             input.SkipLastField();
             break;
           case 10: {
-            Host = input.ReadString();
-            break;
-          }
-          case 18: {
             Service = input.ReadString();
             break;
           }
@@ -179,7 +151,7 @@ namespace Grpc.Health.V1Alpha {
     public static pb::MessageParser<HealthCheckResponse> Parser { get { return _parser; } }
 
     public static pbr::MessageDescriptor Descriptor {
-      get { return global::Grpc.Health.V1Alpha.HealthReflection.Descriptor.MessageTypes[1]; }
+      get { return global::Grpc.Health.V1.HealthReflection.Descriptor.MessageTypes[1]; }
     }
 
     pbr::MessageDescriptor pb::IMessage.Descriptor {
@@ -202,8 +174,8 @@ namespace Grpc.Health.V1Alpha {
 
     /// <summary>Field number for the "status" field.</summary>
     public const int StatusFieldNumber = 1;
-    private global::Grpc.Health.V1Alpha.HealthCheckResponse.Types.ServingStatus status_ = global::Grpc.Health.V1Alpha.HealthCheckResponse.Types.ServingStatus.UNKNOWN;
-    public global::Grpc.Health.V1Alpha.HealthCheckResponse.Types.ServingStatus Status {
+    private global::Grpc.Health.V1.HealthCheckResponse.Types.ServingStatus status_ = global::Grpc.Health.V1.HealthCheckResponse.Types.ServingStatus.UNKNOWN;
+    public global::Grpc.Health.V1.HealthCheckResponse.Types.ServingStatus Status {
       get { return status_; }
       set {
         status_ = value;
@@ -227,7 +199,7 @@ namespace Grpc.Health.V1Alpha {
 
     public override int GetHashCode() {
       int hash = 1;
-      if (Status != global::Grpc.Health.V1Alpha.HealthCheckResponse.Types.ServingStatus.UNKNOWN) hash ^= Status.GetHashCode();
+      if (Status != global::Grpc.Health.V1.HealthCheckResponse.Types.ServingStatus.UNKNOWN) hash ^= Status.GetHashCode();
       return hash;
     }
 
@@ -236,7 +208,7 @@ namespace Grpc.Health.V1Alpha {
     }
 
     public void WriteTo(pb::CodedOutputStream output) {
-      if (Status != global::Grpc.Health.V1Alpha.HealthCheckResponse.Types.ServingStatus.UNKNOWN) {
+      if (Status != global::Grpc.Health.V1.HealthCheckResponse.Types.ServingStatus.UNKNOWN) {
         output.WriteRawTag(8);
         output.WriteEnum((int) Status);
       }
@@ -244,7 +216,7 @@ namespace Grpc.Health.V1Alpha {
 
     public int CalculateSize() {
       int size = 0;
-      if (Status != global::Grpc.Health.V1Alpha.HealthCheckResponse.Types.ServingStatus.UNKNOWN) {
+      if (Status != global::Grpc.Health.V1.HealthCheckResponse.Types.ServingStatus.UNKNOWN) {
         size += 1 + pb::CodedOutputStream.ComputeEnumSize((int) Status);
       }
       return size;
@@ -254,7 +226,7 @@ namespace Grpc.Health.V1Alpha {
       if (other == null) {
         return;
       }
-      if (other.Status != global::Grpc.Health.V1Alpha.HealthCheckResponse.Types.ServingStatus.UNKNOWN) {
+      if (other.Status != global::Grpc.Health.V1.HealthCheckResponse.Types.ServingStatus.UNKNOWN) {
         Status = other.Status;
       }
     }
@@ -267,7 +239,7 @@ namespace Grpc.Health.V1Alpha {
             input.SkipLastField();
             break;
           case 8: {
-            status_ = (global::Grpc.Health.V1Alpha.HealthCheckResponse.Types.ServingStatus) input.ReadEnum();
+            status_ = (global::Grpc.Health.V1.HealthCheckResponse.Types.ServingStatus) input.ReadEnum();
             break;
           }
         }
diff --git a/src/csharp/Grpc.HealthCheck/HealthGrpc.cs b/src/csharp/Grpc.HealthCheck/HealthGrpc.cs
index 882edd56270b6fbb2173c5b6cfcf058a3dd7e8df..68320eb5c2effa410693eec82851005105a854b7 100644
--- a/src/csharp/Grpc.HealthCheck/HealthGrpc.cs
+++ b/src/csharp/Grpc.HealthCheck/HealthGrpc.cs
@@ -7,15 +7,15 @@ using System.Threading;
 using System.Threading.Tasks;
 using Grpc.Core;
 
-namespace Grpc.Health.V1Alpha {
+namespace Grpc.Health.V1 {
   public static class Health
   {
-    static readonly string __ServiceName = "grpc.health.v1alpha.Health";
+    static readonly string __ServiceName = "grpc.health.v1.Health";
 
-    static readonly Marshaller<global::Grpc.Health.V1Alpha.HealthCheckRequest> __Marshaller_HealthCheckRequest = Marshallers.Create((arg) => global::Google.Protobuf.MessageExtensions.ToByteArray(arg), global::Grpc.Health.V1Alpha.HealthCheckRequest.Parser.ParseFrom);
-    static readonly Marshaller<global::Grpc.Health.V1Alpha.HealthCheckResponse> __Marshaller_HealthCheckResponse = Marshallers.Create((arg) => global::Google.Protobuf.MessageExtensions.ToByteArray(arg), global::Grpc.Health.V1Alpha.HealthCheckResponse.Parser.ParseFrom);
+    static readonly Marshaller<global::Grpc.Health.V1.HealthCheckRequest> __Marshaller_HealthCheckRequest = Marshallers.Create((arg) => global::Google.Protobuf.MessageExtensions.ToByteArray(arg), global::Grpc.Health.V1.HealthCheckRequest.Parser.ParseFrom);
+    static readonly Marshaller<global::Grpc.Health.V1.HealthCheckResponse> __Marshaller_HealthCheckResponse = Marshallers.Create((arg) => global::Google.Protobuf.MessageExtensions.ToByteArray(arg), global::Grpc.Health.V1.HealthCheckResponse.Parser.ParseFrom);
 
-    static readonly Method<global::Grpc.Health.V1Alpha.HealthCheckRequest, global::Grpc.Health.V1Alpha.HealthCheckResponse> __Method_Check = new Method<global::Grpc.Health.V1Alpha.HealthCheckRequest, global::Grpc.Health.V1Alpha.HealthCheckResponse>(
+    static readonly Method<global::Grpc.Health.V1.HealthCheckRequest, global::Grpc.Health.V1.HealthCheckResponse> __Method_Check = new Method<global::Grpc.Health.V1.HealthCheckRequest, global::Grpc.Health.V1.HealthCheckResponse>(
         MethodType.Unary,
         __ServiceName,
         "Check",
@@ -25,22 +25,22 @@ namespace Grpc.Health.V1Alpha {
     // service descriptor
     public static global::Google.Protobuf.Reflection.ServiceDescriptor Descriptor
     {
-      get { return global::Grpc.Health.V1Alpha.HealthReflection.Descriptor.Services[0]; }
+      get { return global::Grpc.Health.V1.HealthReflection.Descriptor.Services[0]; }
     }
 
     // client interface
     public interface IHealthClient
     {
-      global::Grpc.Health.V1Alpha.HealthCheckResponse Check(global::Grpc.Health.V1Alpha.HealthCheckRequest request, Metadata headers = null, DateTime? deadline = null, CancellationToken cancellationToken = default(CancellationToken));
-      global::Grpc.Health.V1Alpha.HealthCheckResponse Check(global::Grpc.Health.V1Alpha.HealthCheckRequest request, CallOptions options);
-      AsyncUnaryCall<global::Grpc.Health.V1Alpha.HealthCheckResponse> CheckAsync(global::Grpc.Health.V1Alpha.HealthCheckRequest request, Metadata headers = null, DateTime? deadline = null, CancellationToken cancellationToken = default(CancellationToken));
-      AsyncUnaryCall<global::Grpc.Health.V1Alpha.HealthCheckResponse> CheckAsync(global::Grpc.Health.V1Alpha.HealthCheckRequest request, CallOptions options);
+      global::Grpc.Health.V1.HealthCheckResponse Check(global::Grpc.Health.V1.HealthCheckRequest request, Metadata headers = null, DateTime? deadline = null, CancellationToken cancellationToken = default(CancellationToken));
+      global::Grpc.Health.V1.HealthCheckResponse Check(global::Grpc.Health.V1.HealthCheckRequest request, CallOptions options);
+      AsyncUnaryCall<global::Grpc.Health.V1.HealthCheckResponse> CheckAsync(global::Grpc.Health.V1.HealthCheckRequest request, Metadata headers = null, DateTime? deadline = null, CancellationToken cancellationToken = default(CancellationToken));
+      AsyncUnaryCall<global::Grpc.Health.V1.HealthCheckResponse> CheckAsync(global::Grpc.Health.V1.HealthCheckRequest request, CallOptions options);
     }
 
     // server-side interface
     public interface IHealth
     {
-      Task<global::Grpc.Health.V1Alpha.HealthCheckResponse> Check(global::Grpc.Health.V1Alpha.HealthCheckRequest request, ServerCallContext context);
+      Task<global::Grpc.Health.V1.HealthCheckResponse> Check(global::Grpc.Health.V1.HealthCheckRequest request, ServerCallContext context);
     }
 
     // client stub
@@ -49,22 +49,22 @@ namespace Grpc.Health.V1Alpha {
       public HealthClient(Channel channel) : base(channel)
       {
       }
-      public global::Grpc.Health.V1Alpha.HealthCheckResponse Check(global::Grpc.Health.V1Alpha.HealthCheckRequest request, Metadata headers = null, DateTime? deadline = null, CancellationToken cancellationToken = default(CancellationToken))
+      public global::Grpc.Health.V1.HealthCheckResponse Check(global::Grpc.Health.V1.HealthCheckRequest request, Metadata headers = null, DateTime? deadline = null, CancellationToken cancellationToken = default(CancellationToken))
       {
         var call = CreateCall(__Method_Check, new CallOptions(headers, deadline, cancellationToken));
         return Calls.BlockingUnaryCall(call, request);
       }
-      public global::Grpc.Health.V1Alpha.HealthCheckResponse Check(global::Grpc.Health.V1Alpha.HealthCheckRequest request, CallOptions options)
+      public global::Grpc.Health.V1.HealthCheckResponse Check(global::Grpc.Health.V1.HealthCheckRequest request, CallOptions options)
       {
         var call = CreateCall(__Method_Check, options);
         return Calls.BlockingUnaryCall(call, request);
       }
-      public AsyncUnaryCall<global::Grpc.Health.V1Alpha.HealthCheckResponse> CheckAsync(global::Grpc.Health.V1Alpha.HealthCheckRequest request, Metadata headers = null, DateTime? deadline = null, CancellationToken cancellationToken = default(CancellationToken))
+      public AsyncUnaryCall<global::Grpc.Health.V1.HealthCheckResponse> CheckAsync(global::Grpc.Health.V1.HealthCheckRequest request, Metadata headers = null, DateTime? deadline = null, CancellationToken cancellationToken = default(CancellationToken))
       {
         var call = CreateCall(__Method_Check, new CallOptions(headers, deadline, cancellationToken));
         return Calls.AsyncUnaryCall(call, request);
       }
-      public AsyncUnaryCall<global::Grpc.Health.V1Alpha.HealthCheckResponse> CheckAsync(global::Grpc.Health.V1Alpha.HealthCheckRequest request, CallOptions options)
+      public AsyncUnaryCall<global::Grpc.Health.V1.HealthCheckResponse> CheckAsync(global::Grpc.Health.V1.HealthCheckRequest request, CallOptions options)
       {
         var call = CreateCall(__Method_Check, options);
         return Calls.AsyncUnaryCall(call, request);
diff --git a/src/csharp/Grpc.HealthCheck/HealthServiceImpl.cs b/src/csharp/Grpc.HealthCheck/HealthServiceImpl.cs
index e2ad1a834bfd57c9943c369e8c7dd91e476f5802..21482b302b4dcc1659e5ea33cb2d08e52f0e1412 100644
--- a/src/csharp/Grpc.HealthCheck/HealthServiceImpl.cs
+++ b/src/csharp/Grpc.HealthCheck/HealthServiceImpl.cs
@@ -37,7 +37,7 @@ using System.Threading.Tasks;
 
 using Grpc.Core;
 using Grpc.Core.Utils;
-using Grpc.Health.V1Alpha;
+using Grpc.Health.V1;
 
 namespace Grpc.HealthCheck
 {
@@ -48,44 +48,42 @@ namespace Grpc.HealthCheck
     /// <code>
     /// var serviceImpl = new HealthServiceImpl();
     /// server = new Server();
-    /// server.AddServiceDefinition(Grpc.Health.V1Alpha.Health.BindService(serviceImpl));
+    /// server.AddServiceDefinition(Grpc.Health.V1.Health.BindService(serviceImpl));
     /// </code>
     /// </summary>
-    public class HealthServiceImpl : Grpc.Health.V1Alpha.Health.IHealth
+    public class HealthServiceImpl : Grpc.Health.V1.Health.IHealth
     {
         private readonly object myLock = new object();
-        private readonly Dictionary<Key, HealthCheckResponse.Types.ServingStatus> statusMap = 
-            new Dictionary<Key, HealthCheckResponse.Types.ServingStatus>();
+        private readonly Dictionary<string, HealthCheckResponse.Types.ServingStatus> statusMap = 
+            new Dictionary<string, HealthCheckResponse.Types.ServingStatus>();
 
         /// <summary>
-        /// Sets the health status for given host and service.
+        /// Sets the health status for given service.
         /// </summary>
-        /// <param name="host">The host. Cannot be null.</param>
         /// <param name="service">The service. Cannot be null.</param>
         /// <param name="status">the health status</param>
-        public void SetStatus(string host, string service, HealthCheckResponse.Types.ServingStatus status)
+        public void SetStatus(string service, HealthCheckResponse.Types.ServingStatus status)
         {
             lock (myLock)
             {
-                statusMap[CreateKey(host, service)] = status;
+                statusMap[service] = status;
             }
         }
 
         /// <summary>
-        /// Clears health status for given host and service.
+        /// Clears health status for given service.
         /// </summary>
-        /// <param name="host">The host. Cannot be null.</param>
         /// <param name="service">The service. Cannot be null.</param>
-        public void ClearStatus(string host, string service)
+        public void ClearStatus(string service)
         {
             lock (myLock)
             {
-                statusMap.Remove(CreateKey(host, service));
+                statusMap.Remove(service);
             }
         }
         
         /// <summary>
-        /// Clears statuses for all hosts and services.
+        /// Clears statuses for all services.
         /// </summary>
         public void ClearAll()
         {
@@ -105,11 +103,10 @@ namespace Grpc.HealthCheck
         {
             lock (myLock)
             {
-                var host = request.Host;
                 var service = request.Service;
 
                 HealthCheckResponse.Types.ServingStatus status;
-                if (!statusMap.TryGetValue(CreateKey(host, service), out status))
+                if (!statusMap.TryGetValue(service, out status))
                 {
                     // TODO(jtattermusch): returning specific status from server handler is not supported yet.
                     throw new RpcException(new Status(StatusCode.NotFound, ""));
@@ -117,22 +114,5 @@ namespace Grpc.HealthCheck
                 return Task.FromResult(new HealthCheckResponse { Status = status });
             }
         }
-
-        private static Key CreateKey(string host, string service)
-        {
-            return new Key(host, service);
-        }
-
-        private struct Key
-        {
-            public Key(string host, string service)
-            {
-                this.Host = GrpcPreconditions.CheckNotNull(host);
-                this.Service = GrpcPreconditions.CheckNotNull(service);
-            }
-
-            readonly string Host;
-            readonly string Service;
-        }
     }
 }
diff --git a/src/csharp/generate_proto_csharp.sh b/src/csharp/generate_proto_csharp.sh
index 0261a458af730dd3996a21e9f10d3e346fa68791..23e0540253a3ec226619959dbc8000a3bba741a1 100755
--- a/src/csharp/generate_proto_csharp.sh
+++ b/src/csharp/generate_proto_csharp.sh
@@ -42,7 +42,7 @@ $PROTOC --plugin=$PLUGIN --csharp_out=$EXAMPLES_DIR --grpc_out=$EXAMPLES_DIR \
     -I src/proto/math src/proto/math/math.proto
 
 $PROTOC --plugin=$PLUGIN --csharp_out=$HEALTHCHECK_DIR --grpc_out=$HEALTHCHECK_DIR \
-    -I src/proto/grpc/health/v1alpha src/proto/grpc/health/v1alpha/health.proto
+    -I src/proto/grpc/health/v1 src/proto/grpc/health/v1/health.proto
 
 $PROTOC --plugin=$PLUGIN --csharp_out=$TESTING_DIR --grpc_out=$TESTING_DIR \
     -I . src/proto/grpc/testing/{control,empty,messages,payloads,services,stats,test}.proto 
diff --git a/src/node/health_check/health.js b/src/node/health_check/health.js
index 1a2c0366875701b6b57cf52e0bbfabaf9137f2a2..6ab41571831b803f372fd7f32fd78a972d1ec2a3 100644
--- a/src/node/health_check/health.js
+++ b/src/node/health_check/health.js
@@ -1,6 +1,6 @@
 /*
  *
- * Copyright 2015, Google Inc.
+ * Copyright 2015-2016, Google Inc.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
@@ -38,9 +38,9 @@ var grpc = require('../');
 var _ = require('lodash');
 
 var health_proto = grpc.load(__dirname +
-    '/../../proto/grpc/health/v1alpha/health.proto');
+    '/../../proto/grpc/health/v1/health.proto');
 
-var HealthClient = health_proto.grpc.health.v1alpha.Health;
+var HealthClient = health_proto.grpc.health.v1.Health;
 
 function HealthImplementation(statusMap) {
   this.statusMap = _.clone(statusMap);
diff --git a/src/proto/grpc/health/v1alpha/health.proto b/src/proto/grpc/health/v1/health.proto
similarity index 93%
rename from src/proto/grpc/health/v1alpha/health.proto
rename to src/proto/grpc/health/v1/health.proto
index 05f837dd9904ad7f9ea043abe59e1866dec7a99d..6e27606d1b6fdb4f3e658e0ff4b07d21f1bbc017 100644
--- a/src/proto/grpc/health/v1alpha/health.proto
+++ b/src/proto/grpc/health/v1/health.proto
@@ -29,12 +29,11 @@
 
 syntax = "proto3";
 
-package grpc.health.v1alpha;
-option csharp_namespace = "Grpc.Health.V1Alpha";
+package grpc.health.v1;
+option csharp_namespace = "Grpc.Health.V1";
 
 message HealthCheckRequest {
-  string host = 1;
-  string service = 2;
+  string service = 1;
 }
 
 message HealthCheckResponse {
diff --git a/src/python/grpcio_health_checking/grpc/health/v1alpha/__init__.py b/src/python/grpcio_health_checking/grpc/health/v1/__init__.py
similarity index 97%
rename from src/python/grpcio_health_checking/grpc/health/v1alpha/__init__.py
rename to src/python/grpcio_health_checking/grpc/health/v1/__init__.py
index 708651910607ffb686d781713f6893567821b9fd..13aac79160b8db0fd6863590a4d044464b72dbcc 100644
--- a/src/python/grpcio_health_checking/grpc/health/v1alpha/__init__.py
+++ b/src/python/grpcio_health_checking/grpc/health/v1/__init__.py
@@ -1,4 +1,4 @@
-# Copyright 2015, Google Inc.
+# Copyright 2015-2016, Google Inc.
 # All rights reserved.
 #
 # Redistribution and use in source and binary forms, with or without
diff --git a/src/python/grpcio_health_checking/grpc/health/v1alpha/health.proto b/src/python/grpcio_health_checking/grpc/health/v1/health.proto
similarity index 96%
rename from src/python/grpcio_health_checking/grpc/health/v1alpha/health.proto
rename to src/python/grpcio_health_checking/grpc/health/v1/health.proto
index 57f4aaa9c08d9bbc81aa755cf6b0b3efb76d8adb..de10719b6ced765117e2a4c5672af8a010fa2bd3 100644
--- a/src/python/grpcio_health_checking/grpc/health/v1alpha/health.proto
+++ b/src/python/grpcio_health_checking/grpc/health/v1/health.proto
@@ -1,4 +1,4 @@
-// Copyright 2015, Google Inc.
+// Copyright 2015-2016, Google Inc.
 // All rights reserved.
 //
 // Redistribution and use in source and binary forms, with or without
@@ -29,7 +29,7 @@
 
 syntax = "proto3";
 
-package grpc.health.v1alpha;
+package grpc.health.v1;
 
 message HealthCheckRequest {
   string service = 1;
diff --git a/src/python/grpcio_health_checking/grpc/health/v1alpha/health.py b/src/python/grpcio_health_checking/grpc/health/v1/health.py
similarity index 96%
rename from src/python/grpcio_health_checking/grpc/health/v1alpha/health.py
rename to src/python/grpcio_health_checking/grpc/health/v1/health.py
index 9dfcd962f06142a6f6f85dee8dde2338635d4c58..60cbd644330b2ac48126fed40c58768de087c007 100644
--- a/src/python/grpcio_health_checking/grpc/health/v1alpha/health.py
+++ b/src/python/grpcio_health_checking/grpc/health/v1/health.py
@@ -1,4 +1,4 @@
-# Copyright 2015, Google Inc.
+# Copyright 2015-2016, Google Inc.
 # All rights reserved.
 #
 # Redistribution and use in source and binary forms, with or without
@@ -33,7 +33,7 @@ import abc
 import enum
 import threading
 
-from grpc.health.v1alpha import health_pb2
+from grpc.health.v1 import health_pb2
 
 
 @enum.unique
@@ -64,7 +64,7 @@ class _HealthServicer(health_pb2.EarlyAdopterHealthServicer):
 
   def set(service, status):
     if not isinstance(status, HealthStatus):
-      raise TypeError('expected grpc.health.v1alpha.health.HealthStatus '
+      raise TypeError('expected grpc.health.v1.health.HealthStatus '
                       'for argument `status` but got {}'.format(status))
     with self._server_status_lock:
       self._server_status[service] = status
diff --git a/src/ruby/.rubocop.yml b/src/ruby/.rubocop.yml
index dd57ab60828bc0bf6902ae6ef571992feb4f957d..ff5cf8db83190a6fab07d6c37cbf4f626a2fb29e 100644
--- a/src/ruby/.rubocop.yml
+++ b/src/ruby/.rubocop.yml
@@ -7,7 +7,7 @@ AllCops:
     - 'bin/apis/**/*'
     - 'bin/math.rb'
     - 'bin/math_services.rb'
-    - 'pb/grpc/health/v1alpha/*'
+    - 'pb/grpc/health/v1/*'
     - 'pb/test/**/*'
 
 Metrics/CyclomaticComplexity:
diff --git a/src/ruby/pb/README.md b/src/ruby/pb/README.md
index e04aef185caaa51720922dbd73e02c82da147450..d9e30bbc854434947bb9560d4115d448170ef64a 100644
--- a/src/ruby/pb/README.md
+++ b/src/ruby/pb/README.md
@@ -11,7 +11,7 @@ The code is is generated using the protoc (> 3.0.0.alpha.1) and the
 grpc_ruby_plugin.  These must be installed to regenerate the IDL defined
 classes, but that's not necessary just to use them.
 
-health_check/v1alpha
+health_check/v1
 --------------------
 
 This package defines the surface of a simple health check service that gRPC
@@ -20,7 +20,7 @@ re-generate the surface.
 
 ```bash
 $ # (from this directory)
-$ protoc -I ../../proto ../../proto/grpc/health/v1alpha/health.proto \
+$ protoc -I ../../proto ../../proto/grpc/health/v1/health.proto \
     --grpc_out=. \
     --ruby_out=. \
     --plugin=protoc-gen-grpc=`which grpc_ruby_plugin`
diff --git a/src/ruby/pb/generate_proto_ruby.sh b/src/ruby/pb/generate_proto_ruby.sh
index 576b1c08d300f0a1bf97388a38ae71e18b91524f..86c082099d98304859e4ab55f5a6512b0116f8ab 100755
--- a/src/ruby/pb/generate_proto_ruby.sh
+++ b/src/ruby/pb/generate_proto_ruby.sh
@@ -1,5 +1,5 @@
 #!/bin/sh
-# Copyright 2015, Google Inc.
+# Copyright 2015-2016, Google Inc.
 # All rights reserved.
 #
 # Redistribution and use in source and binary forms, with or without
@@ -35,7 +35,7 @@ cd $(dirname $0)/../../..
 PROTOC=bins/opt/protobuf/protoc
 PLUGIN=protoc-gen-grpc=bins/opt/grpc_ruby_plugin
 
-$PROTOC -I src/proto src/proto/grpc/health/v1alpha/health.proto \
+$PROTOC -I src/proto src/proto/grpc/health/v1/health.proto \
     --grpc_out=src/ruby/pb \
     --ruby_out=src/ruby/pb \
     --plugin=$PLUGIN
diff --git a/src/ruby/pb/grpc/health/checker.rb b/src/ruby/pb/grpc/health/checker.rb
index 8c692e74f900bbc78b15685e4df41274f358a8ba..9f1ee65c41935164c322cde79e7412265010df0e 100644
--- a/src/ruby/pb/grpc/health/checker.rb
+++ b/src/ruby/pb/grpc/health/checker.rb
@@ -1,4 +1,4 @@
-# Copyright 2015, Google Inc.
+# Copyright 2015-2016, Google Inc.
 # All rights reserved.
 #
 # Redistribution and use in source and binary forms, with or without
@@ -28,7 +28,7 @@
 # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
 require 'grpc'
-require 'grpc/health/v1alpha/health_services'
+require 'grpc/health/v1/health_services'
 require 'thread'
 
 module Grpc
@@ -36,9 +36,9 @@ module Grpc
   # service.
   module Health
     # Checker is implementation of the schema-specified health checking service.
-    class Checker < V1alpha::Health::Service
+    class Checker < V1::Health::Service
       StatusCodes = GRPC::Core::StatusCodes
-      HealthCheckResponse = V1alpha::HealthCheckResponse
+      HealthCheckResponse = V1::HealthCheckResponse
 
       # Initializes the statuses of participating services
       def initialize
@@ -50,20 +50,20 @@ module Grpc
       def check(req, _call)
         status = nil
         @status_mutex.synchronize do
-          status = @statuses["#{req.host}/#{req.service}"]
+          status = @statuses["#{req.service}"]
         end
         fail GRPC::BadStatus, StatusCodes::NOT_FOUND if status.nil?
         HealthCheckResponse.new(status: status)
       end
 
-      # Adds the health status for a given host and service.
-      def add_status(host, service, status)
-        @status_mutex.synchronize { @statuses["#{host}/#{service}"] = status }
+      # Adds the health status for a given service.
+      def add_status(service, status)
+        @status_mutex.synchronize { @statuses["#{service}"] = status }
       end
 
-      # Clears the status for the given host or service.
-      def clear_status(host, service)
-        @status_mutex.synchronize { @statuses.delete("#{host}/#{service}") }
+      # Clears the status for the given service.
+      def clear_status(service)
+        @status_mutex.synchronize { @statuses.delete("#{service}") }
       end
 
       # Clears alls the statuses.
diff --git a/src/ruby/pb/grpc/health/v1/health.rb b/src/ruby/pb/grpc/health/v1/health.rb
new file mode 100644
index 0000000000000000000000000000000000000000..aa87a93918b123f6af2f91f58fc7f004b91481b0
--- /dev/null
+++ b/src/ruby/pb/grpc/health/v1/health.rb
@@ -0,0 +1,28 @@
+# Generated by the protocol buffer compiler.  DO NOT EDIT!
+# source: grpc/health/v1/health.proto
+
+require 'google/protobuf'
+
+Google::Protobuf::DescriptorPool.generated_pool.build do
+  add_message "grpc.health.v1.HealthCheckRequest" do
+    optional :service, :string, 1
+  end
+  add_message "grpc.health.v1.HealthCheckResponse" do
+    optional :status, :enum, 1, "grpc.health.v1.HealthCheckResponse.ServingStatus"
+  end
+  add_enum "grpc.health.v1.HealthCheckResponse.ServingStatus" do
+    value :UNKNOWN, 0
+    value :SERVING, 1
+    value :NOT_SERVING, 2
+  end
+end
+
+module Grpc
+  module Health
+    module V1
+      HealthCheckRequest = Google::Protobuf::DescriptorPool.generated_pool.lookup("grpc.health.v1.HealthCheckRequest").msgclass
+      HealthCheckResponse = Google::Protobuf::DescriptorPool.generated_pool.lookup("grpc.health.v1.HealthCheckResponse").msgclass
+      HealthCheckResponse::ServingStatus = Google::Protobuf::DescriptorPool.generated_pool.lookup("grpc.health.v1.HealthCheckResponse.ServingStatus").enummodule
+    end
+  end
+end
diff --git a/src/ruby/pb/grpc/health/v1alpha/health_services.rb b/src/ruby/pb/grpc/health/v1/health_services.rb
similarity index 71%
rename from src/ruby/pb/grpc/health/v1alpha/health_services.rb
rename to src/ruby/pb/grpc/health/v1/health_services.rb
index d5cba2e9ec71c22555c3ebb7c4f739e6bb3c6ed8..cb79b20437f573b40f9c3f6265eec722db4e87c7 100644
--- a/src/ruby/pb/grpc/health/v1alpha/health_services.rb
+++ b/src/ruby/pb/grpc/health/v1/health_services.rb
@@ -1,12 +1,12 @@
 # Generated by the protocol buffer compiler.  DO NOT EDIT!
-# Source: grpc/health/v1alpha/health.proto for package 'grpc.health.v1alpha'
+# Source: grpc/health/v1/health.proto for package 'grpc.health.v1'
 
 require 'grpc'
-require 'grpc/health/v1alpha/health'
+require 'grpc/health/v1/health'
 
 module Grpc
   module Health
-    module V1alpha
+    module V1
       module Health
 
         # TODO: add proto service documentation here
@@ -16,7 +16,7 @@ module Grpc
 
           self.marshal_class_method = :encode
           self.unmarshal_class_method = :decode
-          self.service_name = 'grpc.health.v1alpha.Health'
+          self.service_name = 'grpc.health.v1.Health'
 
           rpc :Check, HealthCheckRequest, HealthCheckResponse
         end
diff --git a/src/ruby/pb/grpc/health/v1alpha/health.rb b/src/ruby/pb/grpc/health/v1alpha/health.rb
deleted file mode 100644
index 9c04298ea54394cda76b9953b15bfae08755f8ce..0000000000000000000000000000000000000000
--- a/src/ruby/pb/grpc/health/v1alpha/health.rb
+++ /dev/null
@@ -1,29 +0,0 @@
-# Generated by the protocol buffer compiler.  DO NOT EDIT!
-# source: grpc/health/v1alpha/health.proto
-
-require 'google/protobuf'
-
-Google::Protobuf::DescriptorPool.generated_pool.build do
-  add_message "grpc.health.v1alpha.HealthCheckRequest" do
-    optional :host, :string, 1
-    optional :service, :string, 2
-  end
-  add_message "grpc.health.v1alpha.HealthCheckResponse" do
-    optional :status, :enum, 1, "grpc.health.v1alpha.HealthCheckResponse.ServingStatus"
-  end
-  add_enum "grpc.health.v1alpha.HealthCheckResponse.ServingStatus" do
-    value :UNKNOWN, 0
-    value :SERVING, 1
-    value :NOT_SERVING, 2
-  end
-end
-
-module Grpc
-  module Health
-    module V1alpha
-      HealthCheckRequest = Google::Protobuf::DescriptorPool.generated_pool.lookup("grpc.health.v1alpha.HealthCheckRequest").msgclass
-      HealthCheckResponse = Google::Protobuf::DescriptorPool.generated_pool.lookup("grpc.health.v1alpha.HealthCheckResponse").msgclass
-      HealthCheckResponse::ServingStatus = Google::Protobuf::DescriptorPool.generated_pool.lookup("grpc.health.v1alpha.HealthCheckResponse.ServingStatus").enummodule
-    end
-  end
-end
diff --git a/src/ruby/spec/pb/health/checker_spec.rb b/src/ruby/spec/pb/health/checker_spec.rb
index c1decd822a76062a58ea9dda0e83a18ec7776590..9bb79bb4cae057c8a5ebab92467570d570076e2d 100644
--- a/src/ruby/spec/pb/health/checker_spec.rb
+++ b/src/ruby/spec/pb/health/checker_spec.rb
@@ -28,7 +28,7 @@
 # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
 require 'grpc'
-require 'grpc/health/v1alpha/health'
+require 'grpc/health/v1/health'
 require 'grpc/health/checker'
 require 'open3'
 require 'tmpdir'
@@ -43,7 +43,7 @@ describe 'Health protobuf code generation' do
       skip 'protoc || grpc_ruby_plugin missing, cannot verify health code-gen'
     else
       it 'should already be loaded indirectly i.e, used by the other specs' do
-        expect(require('grpc/health/v1alpha/health_services')).to be(false)
+        expect(require('grpc/health/v1/health_services')).to be(false)
       end
 
       it 'should have the same content as created by code generation' do
@@ -52,7 +52,7 @@ describe 'Health protobuf code generation' do
 
         # Get the current content
         service_path = File.join(root_dir, 'ruby', 'pb', 'grpc',
-                                 'health', 'v1alpha', 'health_services.rb')
+                                 'health', 'v1', 'health_services.rb')
         want = nil
         File.open(service_path) { |f| want = f.read }
 
@@ -61,12 +61,12 @@ describe 'Health protobuf code generation' do
         plugin = plugin.strip
         got = nil
         Dir.mktmpdir do |tmp_dir|
-          gen_out = File.join(tmp_dir, 'grpc', 'health', 'v1alpha',
+          gen_out = File.join(tmp_dir, 'grpc', 'health', 'v1',
                               'health_services.rb')
           pid = spawn(
             'protoc',
             '-I.',
-            'grpc/health/v1alpha/health.proto',
+            'grpc/health/v1/health.proto',
             "--grpc_out=#{tmp_dir}",
             "--plugin=protoc-gen-grpc=#{plugin}",
             chdir: pb_dir)
@@ -81,27 +81,17 @@ end
 
 describe Grpc::Health::Checker do
   StatusCodes = GRPC::Core::StatusCodes
-  ServingStatus = Grpc::Health::V1alpha::HealthCheckResponse::ServingStatus
-  HCResp = Grpc::Health::V1alpha::HealthCheckResponse
-  HCReq = Grpc::Health::V1alpha::HealthCheckRequest
+  ServingStatus = Grpc::Health::V1::HealthCheckResponse::ServingStatus
+  HCResp = Grpc::Health::V1::HealthCheckResponse
+  HCReq = Grpc::Health::V1::HealthCheckRequest
   success_tests =
     [
       {
-        desc: 'neither host or service are specified',
-        host: '',
+        desc: 'the service is not specified',
         service: ''
       }, {
-        desc: 'only the host is specified',
-        host: 'test-fake-host',
-        service: ''
-      }, {
-        desc: 'the host and service are specified',
-        host: 'test-fake-host',
+        desc: 'the service is specified',
         service: 'fake-service-1'
-      }, {
-        desc: 'only the service is specified',
-        host: '',
-        service: 'fake-service-2'
       }
     ]
 
@@ -114,9 +104,8 @@ describe Grpc::Health::Checker do
   context 'method `add_status` and `check`' do
     success_tests.each do |t|
       it "should succeed when #{t[:desc]}" do
-        subject.add_status(t[:host], t[:service], ServingStatus::NOT_SERVING)
-        got = subject.check(HCReq.new(host: t[:host], service: t[:service]),
-                            nil)
+        subject.add_status(t[:service], ServingStatus::NOT_SERVING)
+        got = subject.check(HCReq.new(service: t[:service]), nil)
         want = HCResp.new(status: ServingStatus::NOT_SERVING)
         expect(got).to eq(want)
       end
@@ -127,7 +116,7 @@ describe Grpc::Health::Checker do
     success_tests.each do |t|
       it "should fail with NOT_FOUND when #{t[:desc]}" do
         blk = proc do
-          subject.check(HCReq.new(host: t[:host], service: t[:service]), nil)
+          subject.check(HCReq.new(service: t[:service]), nil)
         end
         expected_msg = /#{StatusCodes::NOT_FOUND}/
         expect(&blk).to raise_error GRPC::BadStatus, expected_msg
@@ -138,16 +127,14 @@ describe Grpc::Health::Checker do
   context 'method `clear_status`' do
     success_tests.each do |t|
       it "should fail after clearing status when #{t[:desc]}" do
-        subject.add_status(t[:host], t[:service], ServingStatus::NOT_SERVING)
-        got = subject.check(HCReq.new(host: t[:host], service: t[:service]),
-                            nil)
+        subject.add_status(t[:service], ServingStatus::NOT_SERVING)
+        got = subject.check(HCReq.new(service: t[:service]), nil)
         want = HCResp.new(status: ServingStatus::NOT_SERVING)
         expect(got).to eq(want)
 
-        subject.clear_status(t[:host], t[:service])
+        subject.clear_status(t[:service])
         blk = proc do
-          subject.check(HCReq.new(host: t[:host], service: t[:service]),
-                        nil)
+          subject.check(HCReq.new(service: t[:service]), nil)
         end
         expected_msg = /#{StatusCodes::NOT_FOUND}/
         expect(&blk).to raise_error GRPC::BadStatus, expected_msg
@@ -158,9 +145,8 @@ describe Grpc::Health::Checker do
   context 'method `clear_all`' do
     it 'should return NOT_FOUND after being invoked' do
       success_tests.each do |t|
-        subject.add_status(t[:host], t[:service], ServingStatus::NOT_SERVING)
-        got = subject.check(HCReq.new(host: t[:host], service: t[:service]),
-                            nil)
+        subject.add_status(t[:service], ServingStatus::NOT_SERVING)
+        got = subject.check(HCReq.new(service: t[:service]), nil)
         want = HCResp.new(status: ServingStatus::NOT_SERVING)
         expect(got).to eq(want)
       end
@@ -169,7 +155,7 @@ describe Grpc::Health::Checker do
 
       success_tests.each do |t|
         blk = proc do
-          subject.check(HCReq.new(host: t[:host], service: t[:service]), nil)
+          subject.check(HCReq.new(service: t[:service]), nil)
         end
         expected_msg = /#{StatusCodes::NOT_FOUND}/
         expect(&blk).to raise_error GRPC::BadStatus, expected_msg
@@ -203,7 +189,7 @@ describe Grpc::Health::Checker do
 
     it 'should receive the correct status', server: true do
       @srv.handle(subject)
-      subject.add_status('', '', ServingStatus::NOT_SERVING)
+      subject.add_status('', ServingStatus::NOT_SERVING)
       t = Thread.new { @srv.run }
       @srv.wait_till_running
 
@@ -221,7 +207,7 @@ describe Grpc::Health::Checker do
       @srv.wait_till_running
       blk = proc do
         stub = CheckerStub.new(@host, :this_channel_is_insecure, **@client_opts)
-        stub.check(HCReq.new(host: 'unknown', service: 'unknown'))
+        stub.check(HCReq.new(service: 'unknown'))
       end
       expected_msg = /#{StatusCodes::NOT_FOUND}/
       expect(&blk).to raise_error GRPC::BadStatus, expected_msg