diff --git a/src/NServiceBus.AzureFunctions.Common/NServiceBus.AzureFunctions.Common.csproj b/src/NServiceBus.AzureFunctions.Common/NServiceBus.AzureFunctions.Common.csproj
index a2e0253..b964981 100644
--- a/src/NServiceBus.AzureFunctions.Common/NServiceBus.AzureFunctions.Common.csproj
+++ b/src/NServiceBus.AzureFunctions.Common/NServiceBus.AzureFunctions.Common.csproj
@@ -8,7 +8,7 @@
 
   <ItemGroup>
     <PackageReference Include="Microsoft.Azure.Functions.Worker" Version="2.52.0" />
-    <PackageReference Include="NServiceBus" Version="10.2.0-alpha.6" />
+    <PackageReference Include="NServiceBus" Version="10.2.0-alpha.8" />
   </ItemGroup>
 
   <ItemGroup>
diff --git a/src/NServiceBus.AzureFunctions.Tests/MessageProcessorTests.cs b/src/NServiceBus.AzureFunctions.Tests/MessageProcessorTests.cs
index 3d2a548..2a2cc20 100644
--- a/src/NServiceBus.AzureFunctions.Tests/MessageProcessorTests.cs
+++ b/src/NServiceBus.AzureFunctions.Tests/MessageProcessorTests.cs
@@ -358,7 +358,7 @@ public async Task Should_not_propagate_header_mutations_from_on_message_to_on_er
             }
         );
 
-        var headers = result.ErrorContext!.Message.Headers;
+        var headers = result.ErrorContext!.Headers;
         using (Assert.EnterMultipleScope())
         {
             Assert.That(headers.ContainsKey(originalHeaderKey), Is.True, "Original header should still exist in onError");
@@ -502,4 +502,4 @@ class FakeBaseReceiver : IMessageReceiver
         public string Id => string.Empty;
         public string ReceiveAddress => "TestEndpoint";
     }
-}
\ No newline at end of file
+}