diff --git a/src/Microsoft.DotNet.Interactive/Connection/KernelCommandEnvelope.cs b/src/Microsoft.DotNet.Interactive/Connection/KernelCommandEnvelope.cs
index 730dc117d5..0d08586463 100644
--- a/src/Microsoft.DotNet.Interactive/Connection/KernelCommandEnvelope.cs
+++ b/src/Microsoft.DotNet.Interactive/Connection/KernelCommandEnvelope.cs
@@ -74,7 +74,8 @@ public static void RegisterDefaults()
             [nameof(RequestInput)] = typeof(KernelCommandEnvelope<RequestInput>),
             [nameof(RequestValue)] = typeof(KernelCommandEnvelope<RequestValue>),
             [nameof(RequestValueInfos)] = typeof(KernelCommandEnvelope<RequestValueInfos>),
-            [nameof(RequestKernelInfo)] = typeof(KernelCommandEnvelope<RequestKernelInfo>)
+            [nameof(RequestKernelInfo)] = typeof(KernelCommandEnvelope<RequestKernelInfo>),
+            [nameof(SendValue)] = typeof(KernelCommandEnvelope<SendValue>)
         };
 
         _commandTypesByCommandTypeName = new ConcurrentDictionary<string, Type>(_envelopeTypesByCommandTypeName