diff --git a/src/SignalR/common/SignalR.Common/src/Protocol/CancelInvocationMessage.cs b/src/SignalR/common/SignalR.Common/src/Protocol/CancelInvocationMessage.cs
index 5cc9dba052a1..09bd117e6613 100644
--- a/src/SignalR/common/SignalR.Common/src/Protocol/CancelInvocationMessage.cs
+++ b/src/SignalR/common/SignalR.Common/src/Protocol/CancelInvocationMessage.cs
@@ -17,4 +17,7 @@ public class CancelInvocationMessage : HubInvocationMessage
     public CancelInvocationMessage(string invocationId) : base(invocationId)
     {
     }
+
+    /// <inheritdoc cref="HubInvocationMessage.InvocationId" />
+    public new string InvocationId => base.InvocationId!;
 }
diff --git a/src/SignalR/common/SignalR.Common/src/PublicAPI/net10.0/PublicAPI.Unshipped.txt b/src/SignalR/common/SignalR.Common/src/PublicAPI/net10.0/PublicAPI.Unshipped.txt
index 7dc5c58110bf..a98f1485fa2d 100644
--- a/src/SignalR/common/SignalR.Common/src/PublicAPI/net10.0/PublicAPI.Unshipped.txt
+++ b/src/SignalR/common/SignalR.Common/src/PublicAPI/net10.0/PublicAPI.Unshipped.txt
@@ -1 +1,2 @@
 #nullable enable
+Microsoft.AspNetCore.SignalR.Protocol.CancelInvocationMessage.InvocationId.get -> string!
diff --git a/src/SignalR/common/SignalR.Common/src/PublicAPI/net462/PublicAPI.Unshipped.txt b/src/SignalR/common/SignalR.Common/src/PublicAPI/net462/PublicAPI.Unshipped.txt
index 7dc5c58110bf..a98f1485fa2d 100644
--- a/src/SignalR/common/SignalR.Common/src/PublicAPI/net462/PublicAPI.Unshipped.txt
+++ b/src/SignalR/common/SignalR.Common/src/PublicAPI/net462/PublicAPI.Unshipped.txt
@@ -1 +1,2 @@
 #nullable enable
+Microsoft.AspNetCore.SignalR.Protocol.CancelInvocationMessage.InvocationId.get -> string!
diff --git a/src/SignalR/common/SignalR.Common/src/PublicAPI/netstandard2.0/PublicAPI.Unshipped.txt b/src/SignalR/common/SignalR.Common/src/PublicAPI/netstandard2.0/PublicAPI.Unshipped.txt
index 7dc5c58110bf..a98f1485fa2d 100644
--- a/src/SignalR/common/SignalR.Common/src/PublicAPI/netstandard2.0/PublicAPI.Unshipped.txt
+++ b/src/SignalR/common/SignalR.Common/src/PublicAPI/netstandard2.0/PublicAPI.Unshipped.txt
@@ -1 +1,2 @@
 #nullable enable
+Microsoft.AspNetCore.SignalR.Protocol.CancelInvocationMessage.InvocationId.get -> string!