diff --git a/README.md b/README.md
index cb5fb260..687a6605 100644
--- a/README.md
+++ b/README.md
@@ -13,7 +13,7 @@ OpenIddict is based on
 
 OpenIddict fully supports the **[code/implicit/hybrid flows](http://openid.net/specs/openid-connect-core-1_0.html)** and the **[client credentials/resource owner password grants](https://tools.ietf.org/html/rfc6749)**. You can also create your own custom grant types.
 
-Note: OpenIddict natively supports **[Entity Framework Core](https://github.com/aspnet/EntityFramework)** and **[Entity Framework 6](https://github.com/aspnet/EntityFramework6)** out-of-the-box, but you can also provide your own stores.
+Note: OpenIddict natively supports **[Entity Framework Core](https://www.nuget.org/packages/OpenIddict.EntityFrameworkCore)**, **[Entity Framework 6](https://www.nuget.org/packages/OpenIddict.EntityFramework)** and **[MongoDB](https://www.nuget.org/packages/OpenIddict.MongoDb)** out-of-the-box, but you can also provide your own stores.
 
 > Note: **the OpenIddict 2.x packages are only compatible with ASP.NET Core 2.x**.
 > If your application targets ASP.NET Core 1.x, use the OpenIddict 1.x packages.
diff --git a/build/dependencies.props b/build/dependencies.props
index 19f3077a..77c01cf1 100644
--- a/build/dependencies.props
+++ b/build/dependencies.props
@@ -8,11 +8,11 @@
     <CryptoHelperVersion>3.0.2</CryptoHelperVersion>
     <DataAnnotationsVersion>4.4.0</DataAnnotationsVersion>
     <EntityFrameworkVersion>6.1.3</EntityFrameworkVersion>
-    <JetBrainsVersion>10.3.0</JetBrainsVersion>
+    <JetBrainsVersion>2018.2.1</JetBrainsVersion>
     <JsonNetVersion>10.0.2</JsonNetVersion>
     <JsonNetBsonVersion>1.0.1</JsonNetBsonVersion>
-    <ImmutableCollectionsVersion>1.4.0</ImmutableCollectionsVersion>
-    <MongoDbVersion>2.6.1</MongoDbVersion>
+    <ImmutableCollectionsVersion>1.5.0</ImmutableCollectionsVersion>
+    <MongoDbVersion>2.7.0</MongoDbVersion>
     <MoqVersion>4.7.63</MoqVersion>
     <NetStandardImplicitPackageVersion>2.0.0</NetStandardImplicitPackageVersion>
     <NetStandardLibraryNetFrameworkVersion>2.0.0</NetStandardLibraryNetFrameworkVersion>
diff --git a/samples/Mvc.Server/Controllers/UserinfoController.cs b/samples/Mvc.Server/Controllers/UserinfoController.cs
index 078bb33f..9cc5d84c 100644
--- a/samples/Mvc.Server/Controllers/UserinfoController.cs
+++ b/samples/Mvc.Server/Controllers/UserinfoController.cs
@@ -1,5 +1,4 @@
 using System.Threading.Tasks;
-using AspNet.Security.OAuth.Validation;
 using AspNet.Security.OpenIdConnect.Primitives;
 using Microsoft.AspNetCore.Authorization;
 using Microsoft.AspNetCore.Identity;
@@ -7,6 +6,7 @@ using Microsoft.AspNetCore.Mvc;
 using Mvc.Server.Models;
 using Newtonsoft.Json.Linq;
 using OpenIddict.Abstractions;
+using OpenIddict.Validation;
 
 namespace Mvc.Server.Controllers
 {
@@ -22,7 +22,7 @@ namespace Mvc.Server.Controllers
 
         //
         // GET: /api/userinfo
-        [Authorize(AuthenticationSchemes = OAuthValidationDefaults.AuthenticationScheme)]
+        [Authorize(AuthenticationSchemes = OpenIddictValidationDefaults.AuthenticationScheme)]
         [HttpGet("userinfo"), Produces("application/json")]
         public async Task<IActionResult> Userinfo()
         {
diff --git a/src/OpenIddict.MongoDb/OpenIddictMongoDbContext.cs b/src/OpenIddict.MongoDb/OpenIddictMongoDbContext.cs
index 4c09652b..d8f1105d 100644
--- a/src/OpenIddict.MongoDb/OpenIddictMongoDbContext.cs
+++ b/src/OpenIddict.MongoDb/OpenIddictMongoDbContext.cs
@@ -87,35 +87,35 @@ namespace OpenIddict.MongoDb
                     // Note: the cancellation token passed as a parameter is deliberately not used here to ensure
                     // the cancellation of a single store operation doesn't prevent the indexes from being created.
                     var applications = database.GetCollection<OpenIddictApplication>(options.ApplicationsCollectionName);
-                    await applications.Indexes.CreateOneAsync(
+                    await applications.Indexes.CreateOneAsync(new CreateIndexModel<OpenIddictApplication>(
                         Builders<OpenIddictApplication>.IndexKeys.Ascending(application => application.ClientId),
                         new CreateIndexOptions
                         {
                             Unique = true
-                        });
+                        }));
 
-                    await applications.Indexes.CreateOneAsync(
-                        Builders<OpenIddictApplication>.IndexKeys.Ascending(application => application.PostLogoutRedirectUris));
+                    await applications.Indexes.CreateOneAsync(new CreateIndexModel<OpenIddictApplication>(
+                        Builders<OpenIddictApplication>.IndexKeys.Ascending(application => application.PostLogoutRedirectUris)));
 
-                    await applications.Indexes.CreateOneAsync(
-                        Builders<OpenIddictApplication>.IndexKeys.Ascending(application => application.RedirectUris));
+                    await applications.Indexes.CreateOneAsync(new CreateIndexModel<OpenIddictApplication>(
+                        Builders<OpenIddictApplication>.IndexKeys.Ascending(application => application.RedirectUris)));
 
                     var scopes = database.GetCollection<OpenIddictScope>(options.ScopesCollectionName);
-                    await scopes.Indexes.CreateOneAsync(
+                    await scopes.Indexes.CreateOneAsync(new CreateIndexModel<OpenIddictScope>(
                         Builders<OpenIddictScope>.IndexKeys.Ascending(scope => scope.Name),
                         new CreateIndexOptions
                         {
                             Unique = true
-                        });
+                        }));
 
                     var tokens = database.GetCollection<OpenIddictToken>(options.TokensCollectionName);
-                    await tokens.Indexes.CreateOneAsync(
+                    await tokens.Indexes.CreateOneAsync(new CreateIndexModel<OpenIddictToken>(
                         Builders<OpenIddictToken>.IndexKeys.Ascending(token => token.ReferenceId),
                         new CreateIndexOptions<OpenIddictToken>
                         {
                             PartialFilterExpression = Builders<OpenIddictToken>.Filter.Exists(token => token.ReferenceId),
                             Unique = true
-                        });
+                        }));
 
                     return _database = database;
                 }
diff --git a/src/OpenIddict.MongoDb/Stores/OpenIddictApplicationStore.cs b/src/OpenIddict.MongoDb/Stores/OpenIddictApplicationStore.cs
index 76cea3b6..8b0ba466 100644
--- a/src/OpenIddict.MongoDb/Stores/OpenIddictApplicationStore.cs
+++ b/src/OpenIddict.MongoDb/Stores/OpenIddictApplicationStore.cs
@@ -68,7 +68,7 @@ namespace OpenIddict.MongoDb
             var database = await Context.GetDatabaseAsync(cancellationToken);
             var collection = database.GetCollection<TApplication>(Options.CurrentValue.ApplicationsCollectionName);
 
-            return await collection.CountAsync(FilterDefinition<TApplication>.Empty);
+            return await collection.CountDocumentsAsync(FilterDefinition<TApplication>.Empty);
         }
 
         /// <summary>
diff --git a/src/OpenIddict.MongoDb/Stores/OpenIddictAuthorizationStore.cs b/src/OpenIddict.MongoDb/Stores/OpenIddictAuthorizationStore.cs
index cdb0002c..64b2d00f 100644
--- a/src/OpenIddict.MongoDb/Stores/OpenIddictAuthorizationStore.cs
+++ b/src/OpenIddict.MongoDb/Stores/OpenIddictAuthorizationStore.cs
@@ -68,7 +68,7 @@ namespace OpenIddict.MongoDb
             var database = await Context.GetDatabaseAsync(cancellationToken);
             var collection = database.GetCollection<TAuthorization>(Options.CurrentValue.AuthorizationsCollectionName);
 
-            return await collection.CountAsync(FilterDefinition<TAuthorization>.Empty);
+            return await collection.CountDocumentsAsync(FilterDefinition<TAuthorization>.Empty);
         }
 
         /// <summary>
diff --git a/src/OpenIddict.MongoDb/Stores/OpenIddictScopeStore.cs b/src/OpenIddict.MongoDb/Stores/OpenIddictScopeStore.cs
index 6f67aa56..558c88de 100644
--- a/src/OpenIddict.MongoDb/Stores/OpenIddictScopeStore.cs
+++ b/src/OpenIddict.MongoDb/Stores/OpenIddictScopeStore.cs
@@ -68,7 +68,7 @@ namespace OpenIddict.MongoDb
             var database = await Context.GetDatabaseAsync(cancellationToken);
             var collection = database.GetCollection<TScope>(Options.CurrentValue.ScopesCollectionName);
 
-            return await collection.CountAsync(FilterDefinition<TScope>.Empty);
+            return await collection.CountDocumentsAsync(FilterDefinition<TScope>.Empty);
         }
 
         /// <summary>
diff --git a/src/OpenIddict.MongoDb/Stores/OpenIddictTokenStore.cs b/src/OpenIddict.MongoDb/Stores/OpenIddictTokenStore.cs
index f41f0542..34de4e89 100644
--- a/src/OpenIddict.MongoDb/Stores/OpenIddictTokenStore.cs
+++ b/src/OpenIddict.MongoDb/Stores/OpenIddictTokenStore.cs
@@ -68,7 +68,7 @@ namespace OpenIddict.MongoDb
             var database = await Context.GetDatabaseAsync(cancellationToken);
             var collection = database.GetCollection<TToken>(Options.CurrentValue.TokensCollectionName);
 
-            return await collection.CountAsync(FilterDefinition<TToken>.Empty);
+            return await collection.CountDocumentsAsync(FilterDefinition<TToken>.Empty);
         }
 
         /// <summary>
diff --git a/test/OpenIddict.MongoDb.Tests/OpenIddictMongoDbContextTests.cs b/test/OpenIddict.MongoDb.Tests/OpenIddictMongoDbContextTests.cs
index 93d70cef..75ba7a31 100644
--- a/test/OpenIddict.MongoDb.Tests/OpenIddictMongoDbContextTests.cs
+++ b/test/OpenIddict.MongoDb.Tests/OpenIddictMongoDbContextTests.cs
@@ -48,7 +48,7 @@ namespace OpenIddict.MongoDb.Tests
             var provider = services.BuildServiceProvider();
 
             var manager = new Mock<IMongoIndexManager<OpenIddictApplication>>();
-            manager.Setup(mock => mock.CreateOneAsync(It.IsAny<IndexKeysDefinition<OpenIddictApplication>>(), It.IsAny<CreateIndexOptions>(), It.IsAny<CancellationToken>()))
+            manager.Setup(mock => mock.CreateOneAsync(It.IsAny<CreateIndexModel<OpenIddictApplication>>(), It.IsAny<CreateOneIndexOptions>(), It.IsAny<CancellationToken>()))
                 .Returns(async delegate
                 {
                     await Task.Delay(TimeSpan.FromMilliseconds(1000));