diff --git a/include/iextag.idl b/include/iextag.idl
index 7ec05183c62..6b25af572ee 100644
--- a/include/iextag.idl
+++ b/include/iextag.idl
@@ -103,3 +103,18 @@ interface IClientCaps : IDispatch
     [id(23)]
     HRESULT clearComponentRequest();
 }
+
+[
+    uuid(7e8bc440-aeff-11d1-89c2-00c04fb6bfc4),
+    version(1.0)
+]
+library IEXTagLib
+{
+    [
+        uuid(7e8bc44e-aeff-11d1-89c2-00C04fb6bfc4)
+    ]
+    coclass ClientCaps
+    {
+        [default] interface IClientCaps;
+    }
+}