diff --git a/global.json b/global.json
index 8758c819..bca075e8 100644
--- a/global.json
+++ b/global.json
@@ -1,8 +1,11 @@
 {
   "tools": {
-    "dotnet": "3.1.201",
+    "dotnet": "5.0.100-preview.4.20258.7",
     "runtimes": {
-      "aspnetcore": [ "2.1.17" ]
+      "aspnetcore": [
+        "2.1.17",
+        "3.1.4"
+      ]
     }
   },
 
diff --git a/src/OpenIddict.Core/Managers/OpenIddictScopeManager.cs b/src/OpenIddict.Core/Managers/OpenIddictScopeManager.cs
index be963349..f56511a0 100644
--- a/src/OpenIddict.Core/Managers/OpenIddictScopeManager.cs
+++ b/src/OpenIddict.Core/Managers/OpenIddictScopeManager.cs
@@ -528,7 +528,7 @@ namespace OpenIddict.Core
 
             return ExecuteAsync(cancellationToken);
 
-            async IAsyncEnumerable<string> ExecuteAsync(CancellationToken cancellationToken)
+            async IAsyncEnumerable<string> ExecuteAsync([EnumeratorCancellation] CancellationToken cancellationToken)
             {
                 var resources = new HashSet<string>(StringComparer.Ordinal);
 
diff --git a/src/OpenIddict.EntityFramework/OpenIddictEntityFrameworkHelpers.cs b/src/OpenIddict.EntityFramework/OpenIddictEntityFrameworkHelpers.cs
index 55aa6f54..d302e2e7 100644
--- a/src/OpenIddict.EntityFramework/OpenIddictEntityFrameworkHelpers.cs
+++ b/src/OpenIddict.EntityFramework/OpenIddictEntityFrameworkHelpers.cs
@@ -6,6 +6,7 @@
 
 using System.Collections.Generic;
 using System.Linq;
+using System.Runtime.CompilerServices;
 using System.Threading;
 using JetBrains.Annotations;
 using OpenIddict.EntityFramework;
@@ -75,7 +76,7 @@ namespace System.Data.Entity
 
             return ExecuteAsync(cancellationToken);
 
-            async IAsyncEnumerable<T> ExecuteAsync(CancellationToken cancellationToken)
+            async IAsyncEnumerable<T> ExecuteAsync([EnumeratorCancellation] CancellationToken cancellationToken)
             {
                 foreach (var element in await source.ToListAsync(cancellationToken))
                 {
diff --git a/src/OpenIddict.EntityFrameworkCore/OpenIddictEntityFrameworkCoreHelpers.cs b/src/OpenIddict.EntityFrameworkCore/OpenIddictEntityFrameworkCoreHelpers.cs
index 868d2ad5..8acbe973 100644
--- a/src/OpenIddict.EntityFrameworkCore/OpenIddictEntityFrameworkCoreHelpers.cs
+++ b/src/OpenIddict.EntityFrameworkCore/OpenIddictEntityFrameworkCoreHelpers.cs
@@ -7,6 +7,7 @@
 using System;
 using System.Collections.Generic;
 using System.Linq;
+using System.Runtime.CompilerServices;
 using System.Threading;
 using JetBrains.Annotations;
 using Microsoft.EntityFrameworkCore.Infrastructure;
@@ -134,7 +135,7 @@ namespace Microsoft.EntityFrameworkCore
 
             return ExecuteAsync(cancellationToken);
 
-            async IAsyncEnumerable<T> ExecuteAsync(CancellationToken cancellationToken)
+            async IAsyncEnumerable<T> ExecuteAsync([EnumeratorCancellation] CancellationToken cancellationToken)
             {
                 foreach (var element in await source.ToListAsync(cancellationToken))
                 {
diff --git a/src/OpenIddict.MongoDb/Stores/OpenIddictApplicationStore.cs b/src/OpenIddict.MongoDb/Stores/OpenIddictApplicationStore.cs
index b01908e2..90589a33 100644
--- a/src/OpenIddict.MongoDb/Stores/OpenIddictApplicationStore.cs
+++ b/src/OpenIddict.MongoDb/Stores/OpenIddictApplicationStore.cs
@@ -204,7 +204,7 @@ namespace OpenIddict.MongoDb
 
             return ExecuteAsync(cancellationToken);
 
-            async IAsyncEnumerable<TApplication> ExecuteAsync(CancellationToken cancellationToken)
+            async IAsyncEnumerable<TApplication> ExecuteAsync([EnumeratorCancellation] CancellationToken cancellationToken)
             {
                 var database = await Context.GetDatabaseAsync(cancellationToken);
                 var collection = database.GetCollection<TApplication>(Options.CurrentValue.ApplicationsCollectionName);
@@ -233,7 +233,7 @@ namespace OpenIddict.MongoDb
 
             return ExecuteAsync(cancellationToken);
 
-            async IAsyncEnumerable<TApplication> ExecuteAsync(CancellationToken cancellationToken)
+            async IAsyncEnumerable<TApplication> ExecuteAsync([EnumeratorCancellation] CancellationToken cancellationToken)
             {
                 var database = await Context.GetDatabaseAsync(cancellationToken);
                 var collection = database.GetCollection<TApplication>(Options.CurrentValue.ApplicationsCollectionName);
@@ -590,7 +590,7 @@ namespace OpenIddict.MongoDb
 
             return ExecuteAsync(cancellationToken);
 
-            async IAsyncEnumerable<TResult> ExecuteAsync(CancellationToken cancellationToken)
+            async IAsyncEnumerable<TResult> ExecuteAsync([EnumeratorCancellation] CancellationToken cancellationToken)
             {
                 var database = await Context.GetDatabaseAsync(cancellationToken);
                 var collection = database.GetCollection<TApplication>(Options.CurrentValue.ApplicationsCollectionName);
diff --git a/src/OpenIddict.MongoDb/Stores/OpenIddictAuthorizationStore.cs b/src/OpenIddict.MongoDb/Stores/OpenIddictAuthorizationStore.cs
index df638351..51d17a60 100644
--- a/src/OpenIddict.MongoDb/Stores/OpenIddictAuthorizationStore.cs
+++ b/src/OpenIddict.MongoDb/Stores/OpenIddictAuthorizationStore.cs
@@ -162,7 +162,7 @@ namespace OpenIddict.MongoDb
 
             return ExecuteAsync(cancellationToken);
 
-            async IAsyncEnumerable<TAuthorization> ExecuteAsync(CancellationToken cancellationToken)
+            async IAsyncEnumerable<TAuthorization> ExecuteAsync([EnumeratorCancellation] CancellationToken cancellationToken)
             {
                 var database = await Context.GetDatabaseAsync(cancellationToken);
                 var collection = database.GetCollection<TAuthorization>(Options.CurrentValue.AuthorizationsCollectionName);
@@ -205,7 +205,7 @@ namespace OpenIddict.MongoDb
 
             return ExecuteAsync(cancellationToken);
 
-            async IAsyncEnumerable<TAuthorization> ExecuteAsync(CancellationToken cancellationToken)
+            async IAsyncEnumerable<TAuthorization> ExecuteAsync([EnumeratorCancellation] CancellationToken cancellationToken)
             {
                 var database = await Context.GetDatabaseAsync(cancellationToken);
                 var collection = database.GetCollection<TAuthorization>(Options.CurrentValue.AuthorizationsCollectionName);
@@ -255,7 +255,7 @@ namespace OpenIddict.MongoDb
 
             return ExecuteAsync(cancellationToken);
 
-            async IAsyncEnumerable<TAuthorization> ExecuteAsync(CancellationToken cancellationToken)
+            async IAsyncEnumerable<TAuthorization> ExecuteAsync([EnumeratorCancellation] CancellationToken cancellationToken)
             {
                 var database = await Context.GetDatabaseAsync(cancellationToken);
                 var collection = database.GetCollection<TAuthorization>(Options.CurrentValue.AuthorizationsCollectionName);
@@ -308,7 +308,7 @@ namespace OpenIddict.MongoDb
 
             return ExecuteAsync(cancellationToken);
 
-            async IAsyncEnumerable<TAuthorization> ExecuteAsync(CancellationToken cancellationToken)
+            async IAsyncEnumerable<TAuthorization> ExecuteAsync([EnumeratorCancellation] CancellationToken cancellationToken)
             {
                 var database = await Context.GetDatabaseAsync(cancellationToken);
                 var collection = database.GetCollection<TAuthorization>(Options.CurrentValue.AuthorizationsCollectionName);
@@ -343,7 +343,7 @@ namespace OpenIddict.MongoDb
 
             return ExecuteAsync(cancellationToken);
 
-            async IAsyncEnumerable<TAuthorization> ExecuteAsync(CancellationToken cancellationToken)
+            async IAsyncEnumerable<TAuthorization> ExecuteAsync([EnumeratorCancellation] CancellationToken cancellationToken)
             {
                 var database = await Context.GetDatabaseAsync(cancellationToken);
                 var collection = database.GetCollection<TAuthorization>(Options.CurrentValue.AuthorizationsCollectionName);
@@ -395,7 +395,7 @@ namespace OpenIddict.MongoDb
 
             return ExecuteAsync(cancellationToken);
 
-            async IAsyncEnumerable<TAuthorization> ExecuteAsync(CancellationToken cancellationToken)
+            async IAsyncEnumerable<TAuthorization> ExecuteAsync([EnumeratorCancellation] CancellationToken cancellationToken)
             {
                 var database = await Context.GetDatabaseAsync(cancellationToken);
                 var collection = database.GetCollection<TAuthorization>(Options.CurrentValue.AuthorizationsCollectionName);
@@ -657,7 +657,7 @@ namespace OpenIddict.MongoDb
 
             return ExecuteAsync(cancellationToken);
 
-            async IAsyncEnumerable<TResult> ExecuteAsync(CancellationToken cancellationToken)
+            async IAsyncEnumerable<TResult> ExecuteAsync([EnumeratorCancellation] CancellationToken cancellationToken)
             {
                 var database = await Context.GetDatabaseAsync(cancellationToken);
                 var collection = database.GetCollection<TAuthorization>(Options.CurrentValue.AuthorizationsCollectionName);
diff --git a/src/OpenIddict.MongoDb/Stores/OpenIddictScopeStore.cs b/src/OpenIddict.MongoDb/Stores/OpenIddictScopeStore.cs
index 89963b85..80c25a0e 100644
--- a/src/OpenIddict.MongoDb/Stores/OpenIddictScopeStore.cs
+++ b/src/OpenIddict.MongoDb/Stores/OpenIddictScopeStore.cs
@@ -195,7 +195,7 @@ namespace OpenIddict.MongoDb
 
             return ExecuteAsync(cancellationToken);
 
-            async IAsyncEnumerable<TScope> ExecuteAsync(CancellationToken cancellationToken)
+            async IAsyncEnumerable<TScope> ExecuteAsync([EnumeratorCancellation] CancellationToken cancellationToken)
             {
                 var database = await Context.GetDatabaseAsync(cancellationToken);
                 var collection = database.GetCollection<TScope>(Options.CurrentValue.ScopesCollectionName);
@@ -225,7 +225,7 @@ namespace OpenIddict.MongoDb
 
             return ExecuteAsync(cancellationToken);
 
-            async IAsyncEnumerable<TScope> ExecuteAsync(CancellationToken cancellationToken)
+            async IAsyncEnumerable<TScope> ExecuteAsync([EnumeratorCancellation] CancellationToken cancellationToken)
             {
                 var database = await Context.GetDatabaseAsync(cancellationToken);
                 var collection = database.GetCollection<TScope>(Options.CurrentValue.ScopesCollectionName);
@@ -466,7 +466,7 @@ namespace OpenIddict.MongoDb
 
             return ExecuteAsync(cancellationToken);
 
-            async IAsyncEnumerable<TResult> ExecuteAsync(CancellationToken cancellationToken)
+            async IAsyncEnumerable<TResult> ExecuteAsync([EnumeratorCancellation] CancellationToken cancellationToken)
             {
                 var database = await Context.GetDatabaseAsync(cancellationToken);
                 var collection = database.GetCollection<TScope>(Options.CurrentValue.ScopesCollectionName);
diff --git a/src/OpenIddict.MongoDb/Stores/OpenIddictTokenStore.cs b/src/OpenIddict.MongoDb/Stores/OpenIddictTokenStore.cs
index 67c76922..7fa9aca2 100644
--- a/src/OpenIddict.MongoDb/Stores/OpenIddictTokenStore.cs
+++ b/src/OpenIddict.MongoDb/Stores/OpenIddictTokenStore.cs
@@ -158,7 +158,7 @@ namespace OpenIddict.MongoDb
 
             return ExecuteAsync(cancellationToken);
 
-            async IAsyncEnumerable<TToken> ExecuteAsync(CancellationToken cancellationToken)
+            async IAsyncEnumerable<TToken> ExecuteAsync([EnumeratorCancellation] CancellationToken cancellationToken)
             {
                 var database = await Context.GetDatabaseAsync(cancellationToken);
                 var collection = database.GetCollection<TToken>(Options.CurrentValue.TokensCollectionName);
@@ -201,7 +201,7 @@ namespace OpenIddict.MongoDb
 
             return ExecuteAsync(cancellationToken);
 
-            async IAsyncEnumerable<TToken> ExecuteAsync(CancellationToken cancellationToken)
+            async IAsyncEnumerable<TToken> ExecuteAsync([EnumeratorCancellation] CancellationToken cancellationToken)
             {
                 var database = await Context.GetDatabaseAsync(cancellationToken);
                 var collection = database.GetCollection<TToken>(Options.CurrentValue.TokensCollectionName);
@@ -251,7 +251,7 @@ namespace OpenIddict.MongoDb
 
             return ExecuteAsync(cancellationToken);
 
-            async IAsyncEnumerable<TToken> ExecuteAsync(CancellationToken cancellationToken)
+            async IAsyncEnumerable<TToken> ExecuteAsync([EnumeratorCancellation] CancellationToken cancellationToken)
             {
                 var database = await Context.GetDatabaseAsync(cancellationToken);
                 var collection = database.GetCollection<TToken>(Options.CurrentValue.TokensCollectionName);
@@ -283,7 +283,7 @@ namespace OpenIddict.MongoDb
 
             return ExecuteAsync(cancellationToken);
 
-            async IAsyncEnumerable<TToken> ExecuteAsync(CancellationToken cancellationToken)
+            async IAsyncEnumerable<TToken> ExecuteAsync([EnumeratorCancellation] CancellationToken cancellationToken)
             {
                 var database = await Context.GetDatabaseAsync(cancellationToken);
                 var collection = database.GetCollection<TToken>(Options.CurrentValue.TokensCollectionName);
@@ -312,7 +312,7 @@ namespace OpenIddict.MongoDb
 
             return ExecuteAsync(cancellationToken);
 
-            async IAsyncEnumerable<TToken> ExecuteAsync(CancellationToken cancellationToken)
+            async IAsyncEnumerable<TToken> ExecuteAsync([EnumeratorCancellation] CancellationToken cancellationToken)
             {
                 var database = await Context.GetDatabaseAsync(cancellationToken);
                 var collection = database.GetCollection<TToken>(Options.CurrentValue.TokensCollectionName);
@@ -385,7 +385,7 @@ namespace OpenIddict.MongoDb
 
             return ExecuteAsync(cancellationToken);
 
-            async IAsyncEnumerable<TToken> ExecuteAsync(CancellationToken cancellationToken)
+            async IAsyncEnumerable<TToken> ExecuteAsync([EnumeratorCancellation] CancellationToken cancellationToken)
             {
                 var database = await Context.GetDatabaseAsync(cancellationToken);
                 var collection = database.GetCollection<TToken>(Options.CurrentValue.TokensCollectionName);
@@ -718,7 +718,7 @@ namespace OpenIddict.MongoDb
 
             return ExecuteAsync(cancellationToken);
 
-            async IAsyncEnumerable<TResult> ExecuteAsync(CancellationToken cancellationToken)
+            async IAsyncEnumerable<TResult> ExecuteAsync([EnumeratorCancellation] CancellationToken cancellationToken)
             {
                 var database = await Context.GetDatabaseAsync(cancellationToken);
                 var collection = database.GetCollection<TToken>(Options.CurrentValue.TokensCollectionName);