diff --git a/Octokit.Reactive/Clients/IObservableMigrationsClient.cs b/Octokit.Reactive/Clients/IObservableMigrationsClient.cs
index 288069ab3c..5ca361d844 100644
--- a/Octokit.Reactive/Clients/IObservableMigrationsClient.cs
+++ b/Octokit.Reactive/Clients/IObservableMigrationsClient.cs
@@ -40,7 +40,7 @@ IObservable<List<Migration>> GetAll(
             string org);
 
         /// <summary>
-        /// Get the status of a migration
+        /// Get the status of a migration.
         /// </summary>
         /// <remarks>
         /// https://developer.github.com/v3/migration/migrations/#get-the-status-of-a-migration
@@ -54,15 +54,15 @@ IObservable<Migration> Get(
            int id);
 
         /// <summary>
-        /// Fetches the URL to a migration archive.
+        /// Get the migration archive.
         /// </summary>
         /// <remarks>
         /// https://developer.github.com/v3/migration/migrations/#download-a-migration-archive
         /// </remarks>
         /// <param name="org">The organization of which the migration was.</param>
         /// <param name="id">The ID of the migration.</param>
-        /// <returns>URL as a string of the download link of the archive.</returns>
-        IObservable<string> GetArchive(
+        /// <returns>The binary contents of the archive as a byte array.</returns>
+        IObservable<byte[]> GetArchive(
             string org,
             int id);
 
diff --git a/Octokit.Reactive/Clients/ObservableMigrationsClient.cs b/Octokit.Reactive/Clients/ObservableMigrationsClient.cs
index c789bb2591..55b29c50ae 100644
--- a/Octokit.Reactive/Clients/ObservableMigrationsClient.cs
+++ b/Octokit.Reactive/Clients/ObservableMigrationsClient.cs
@@ -70,15 +70,15 @@ public IObservable<Migration> Get(string org, int id)
         }
 
         /// <summary>
-        /// Fetches the URL to a migration archive.
+        /// Get the migration archive.
         /// </summary>
         /// <remarks>
         /// https://developer.github.com/v3/migration/migrations/#download-a-migration-archive
         /// </remarks>
         /// <param name="org">The organization of which the migration was.</param>
         /// <param name="id">The ID of the migration.</param>
-        /// <returns>URL as a string of the download link of the archive.</returns>
-        public IObservable<string> GetArchive(string org, int id)
+        /// <returns>The binary contents of the archive as a byte array.</returns>
+        public IObservable<byte[]> GetArchive(string org, int id)
         {
             return _client.GetArchive(org, id).ToObservable();
         }
diff --git a/Octokit.Tests.Integration/Clients/MigrationsClientTests.cs b/Octokit.Tests.Integration/Clients/MigrationsClientTests.cs
index 2b2322acc1..fc81f5a8a8 100644
--- a/Octokit.Tests.Integration/Clients/MigrationsClientTests.cs
+++ b/Octokit.Tests.Integration/Clients/MigrationsClientTests.cs
@@ -84,9 +84,9 @@ public async Task CanGetArchive()
             Thread.Sleep(2000);    
         }
 
-        var url = await _gitHub.Migration.Migrations.GetArchive(_orgName, _migrationContext.Id);
-
-        Assert.NotEmpty(url);
+        var contents = await _gitHub.Migration.Migrations.GetArchive(_orgName, _migrationContext.Id);
+        
+        Assert.NotEmpty(contents);
     }
 
     [IntegrationTest]
diff --git a/Octokit.Tests/Clients/MigrationsClientTests.cs b/Octokit.Tests/Clients/MigrationsClientTests.cs
index 6beadb4633..03b99f05eb 100644
--- a/Octokit.Tests/Clients/MigrationsClientTests.cs
+++ b/Octokit.Tests/Clients/MigrationsClientTests.cs
@@ -123,7 +123,7 @@ public void RequestsCorrectUrl()
 
                 client.GetArchive("fake", 69);
 
-                connection.Received().Get<string>(
+                connection.Connection.Received().Get<byte[]>(
                     Arg.Is<Uri>(u => u.ToString() == "orgs/fake/migrations/69/archive"),
                     null,
                     AcceptHeaders.MigrationsApiPreview);
diff --git a/Octokit/Clients/IMigrationsClient.cs b/Octokit/Clients/IMigrationsClient.cs
index 68925a970e..75a7f97487 100644
--- a/Octokit/Clients/IMigrationsClient.cs
+++ b/Octokit/Clients/IMigrationsClient.cs
@@ -53,15 +53,15 @@ Task<Migration> Get(
             int id);
 
         /// <summary>
-        /// Fetches the URL to a migration archive.
+        /// Get the migration archive.
         /// </summary>
         /// <remarks>
         /// https://developer.github.com/v3/migration/migrations/#download-a-migration-archive
         /// </remarks>
         /// <param name="org">The organization of which the migration was.</param>
         /// <param name="id">The ID of the migration.</param>
-        /// <returns>URL as a string of the download link of the archive.</returns>
-        Task<string> GetArchive(
+        /// <returns>The binary contents of the archive as a byte array.</returns>
+        Task<byte[]> GetArchive(
             string org,
             int id);
 
diff --git a/Octokit/Clients/MigrationsClient.cs b/Octokit/Clients/MigrationsClient.cs
index e73b2ab48c..a54f0c59fa 100644
--- a/Octokit/Clients/MigrationsClient.cs
+++ b/Octokit/Clients/MigrationsClient.cs
@@ -75,21 +75,22 @@ public async Task<Migration> Get(string org, int id)
         }
 
         /// <summary>
-        /// Fetches the URL to a migration archive.
+        /// Get the migration archive.
         /// </summary>
         /// <remarks>
         /// https://developer.github.com/v3/migration/migrations/#download-a-migration-archive
         /// </remarks>
         /// <param name="org">The organization of which the migration was.</param>
         /// <param name="id">The ID of the migration.</param>
-        /// <returns>URL as a string of the download link of the archive.</returns>
-        public async Task<string> GetArchive(string org, int id)
+        /// <returns>The binary contents of the archive as a byte array.</returns>
+        public async Task<byte[]> GetArchive(string org, int id)
         {
             Ensure.ArgumentNotNullOrEmptyString(org, "org");
 
             var endpoint = ApiUrls.EnterpriseMigrationArchive(org, id);
+            var response = await Connection.Get<byte[]>(endpoint, null, AcceptHeaders.MigrationsApiPreview);
 
-            return await ApiConnection.Get<string>(endpoint, null, AcceptHeaders.MigrationsApiPreview);
+            return response.Body;
         }
 
         /// <summary>