diff --git a/Directory.Build.props b/Directory.Build.props
index 3ca3171cd..f98c95e79 100644
--- a/Directory.Build.props
+++ b/Directory.Build.props
@@ -11,7 +11,7 @@
         <NoWarn>1570;1571;1572;1573;1574;1587;1591;1701;1702;1711;1735;0618</NoWarn>
         <ImplicitUsings>true</ImplicitUsings>
         <Nullable>enable</Nullable>
-        <Version>4.12.0</Version>
+        <Version>4.12.1</Version>
         <RepositoryUrl>$(PackageProjectUrl)</RepositoryUrl>
         <PublishRepositoryUrl>true</PublishRepositoryUrl>
         <EmbedUntrackedSources>true</EmbedUntrackedSources>
diff --git a/src/Wolverine/Runtime/MessageContext.cs b/src/Wolverine/Runtime/MessageContext.cs
index a02283244..5d98c4feb 100644
--- a/src/Wolverine/Runtime/MessageContext.cs
+++ b/src/Wolverine/Runtime/MessageContext.cs
@@ -38,7 +38,7 @@ private bool hasRequestedReply()
 
     private bool isMissingRequestedReply()
     {
-        return Outstanding.All(x => x.MessageType != Envelope!.ReplyRequested);
+        return Outstanding.Concat(_sent ?? []).All(x => x.MessageType != Envelope!.ReplyRequested);
     }
 
     public async Task FlushOutgoingMessagesAsync()
@@ -95,11 +95,15 @@ public async Task FlushOutgoingMessagesAsync()
             await flushScheduledMessagesAsync();
         }
 
+        _sent ??= new();
+        _sent.AddRange(_outstanding);
         _outstanding.Clear();
 
         _hasFlushed = true;
     }
 
+    private List<Envelope>? _sent;
+
     public async Task AssertAnyRequiredResponseWasGenerated()
     {
         if (hasRequestedReply() && _channel is not InvocationCallback && isMissingRequestedReply())
@@ -108,7 +112,7 @@ public async Task AssertAnyRequiredResponseWasGenerated()
             if (_outstanding.Any())
             {
                 failureDescription += "Actual cascading messages were " +
-                                      _outstanding.Select(x => x.MessageType).Join(", ");
+                                      _outstanding.Concat(_sent ?? []).Select(x => x.MessageType).Join(", ");
             }
             else
             {