diff --git a/eng/ApiCompatExcludeAttributes.txt b/eng/ApiCompatExcludeAttributes.txt
index f324032096a6d..83aa68c922346 100644
--- a/eng/ApiCompatExcludeAttributes.txt
+++ b/eng/ApiCompatExcludeAttributes.txt
@@ -1,4 +1,3 @@
-T:System.CLSCompliantAttribute
 T:System.Diagnostics.CodeAnalysis.MemberNotNullAttribute
 T:System.Diagnostics.DebuggerGuidedStepThroughAttribute
 T:System.Runtime.CompilerServices.EagerStaticClassConstructionAttribute
diff --git a/src/libraries/System.Runtime.InteropServices/ref/System.Runtime.InteropServices.cs b/src/libraries/System.Runtime.InteropServices/ref/System.Runtime.InteropServices.cs
index d652dbb6bc60d..eac47acf63d96 100644
--- a/src/libraries/System.Runtime.InteropServices/ref/System.Runtime.InteropServices.cs
+++ b/src/libraries/System.Runtime.InteropServices/ref/System.Runtime.InteropServices.cs
@@ -1438,6 +1438,7 @@ public partial interface IConnectionPointContainer
         void EnumConnectionPoints(out System.Runtime.InteropServices.ComTypes.IEnumConnectionPoints ppEnum);
         void FindConnectionPoint(ref System.Guid riid, out System.Runtime.InteropServices.ComTypes.IConnectionPoint? ppCP);
     }
+    [System.CLSCompliantAttribute(false)]
     [System.Runtime.InteropServices.InterfaceTypeAttribute(System.Runtime.InteropServices.ComInterfaceType.InterfaceIsIUnknown)]
     public partial interface IDataObject
     {
diff --git a/src/libraries/apicompat/ApiCompatBaselineExcludedAttributes.txt b/src/libraries/apicompat/ApiCompatBaselineExcludedAttributes.txt
index e0462b40d366f..7cb41fe1bb531 100644
--- a/src/libraries/apicompat/ApiCompatBaselineExcludedAttributes.txt
+++ b/src/libraries/apicompat/ApiCompatBaselineExcludedAttributes.txt
@@ -1,4 +1,5 @@
 // These attributes shouldn't be checked against baseline reference assemblies
 
+T:System.CLSCompliantAttribute
 T:System.ComponentModel.EditorBrowsableAttribute
 T:System.ObsoleteAttribute