diff --git a/Directory.Packages.props b/Directory.Packages.props
index e9c7569ca..3df7c81a3 100644
--- a/Directory.Packages.props
+++ b/Directory.Packages.props
@@ -19,7 +19,7 @@
     <PackageVersion Include="ImpromptuInterface" Version="7.0.1" Condition="'$(TargetFramework)' == 'netstandard2.0'" />
     <PackageVersion Include="Microsoft.ApplicationInsights" Version="2.21.0" />
     <PackageVersion Include="Microsoft.AspNet.WebApi.OwinSelfHost" Version="5.3.0" />
-    <PackageVersion Include="Microsoft.Bcl.AsyncInterfaces" Version="6.0.0" />
+    <PackageVersion Include="Microsoft.Bcl.AsyncInterfaces" Version="10.0.0" />
     <PackageVersion Include="Microsoft.CSharp" Version="4.7.0" />
     <PackageVersion Include="Microsoft.Data.Services.Client" Version="5.8.5" />
     <PackageVersion Include="Microsoft.Extensions.DependencyInjection" Version="2.1.1" />
@@ -30,7 +30,7 @@
     <PackageVersion Include="Newtonsoft.Json" Version="13.0.1" />
     <PackageVersion Include="System.Collections.Immutable" Version="1.2.0" />
     <PackageVersion Include="System.Diagnostics.DiagnosticSource" Version="6.0.1" />
-    <PackageVersion Include="System.Linq.Async" Version="6.0.1" />
+    <PackageVersion Include="System.Linq.AsyncEnumerable" Version="10.0.0" />
     <PackageVersion Include="System.Reactive.Compatibility" Version="4.4.1" />
     <PackageVersion Include="System.Reactive.Core" Version="4.4.1" />
   </ItemGroup>
diff --git a/src/DurableTask.AzureStorage/DurableTask.AzureStorage.csproj b/src/DurableTask.AzureStorage/DurableTask.AzureStorage.csproj
index 8ff135fbd..0dbce5058 100644
--- a/src/DurableTask.AzureStorage/DurableTask.AzureStorage.csproj
+++ b/src/DurableTask.AzureStorage/DurableTask.AzureStorage.csproj
@@ -45,7 +45,7 @@
     <PackageReference Include="Azure.Storage.Blobs" />
     <PackageReference Include="Azure.Storage.Queues" />
     <PackageReference Include="Microsoft.Bcl.AsyncInterfaces" />
-    <PackageReference Include="System.Linq.Async" />
+    <PackageReference Include="System.Linq.AsyncEnumerable" />
   </ItemGroup>
 
   <ItemGroup>
diff --git a/src/DurableTask.AzureStorage/OrchestrationSessionManager.cs b/src/DurableTask.AzureStorage/OrchestrationSessionManager.cs
index 51a6e07ba..084a1fe28 100644
--- a/src/DurableTask.AzureStorage/OrchestrationSessionManager.cs
+++ b/src/DurableTask.AzureStorage/OrchestrationSessionManager.cs
@@ -273,7 +273,7 @@ async Task<IEnumerable<MessageData>> DedupeExecutionStartedMessagesAsync(
             // "Remote" -> the instance ID info comes from the Instances table that we're querying
             IAsyncEnumerable<OrchestrationState> instances = this.trackingStore.GetStateAsync(instanceIds, cancellationToken);
             IDictionary<string, OrchestrationState> remoteOrchestrationsById = 
-                await instances.ToDictionaryAsync(o => o.OrchestrationInstance.InstanceId, cancellationToken);
+                await instances.ToDictionaryAsync(o => o.OrchestrationInstance.InstanceId, comparer: null, cancellationToken);
 
             foreach (MessageData message in executionStartedMessages)
             {