diff --git a/eng/CodeAnalysis.ruleset b/eng/CodeAnalysis.ruleset
index 133252bae8f791..012ace701b3d75 100644
--- a/eng/CodeAnalysis.ruleset
+++ b/eng/CodeAnalysis.ruleset
@@ -176,6 +176,7 @@
     <Rule Id="CA2249" Action="Warning" />       <!-- Consider using 'string.Contains' instead of 'string.IndexOf' -->
     <Rule Id="CA2250" Action="Warning" />       <!-- Use 'ThrowIfCancellationRequested' -->
     <Rule Id="CA2251" Action="Warning" />       <!-- Use 'string.Equals' -->
+    <Rule Id="CA2252" Action="None" />          <!-- This API requires opting into preview features -->
     <Rule Id="CA2300" Action="None" />          <!-- Do not use insecure deserializer BinaryFormatter -->
     <Rule Id="CA2301" Action="None" />          <!-- Do not call BinaryFormatter.Deserialize without first setting BinaryFormatter.Binder -->
     <Rule Id="CA2302" Action="None" />          <!-- Ensure BinaryFormatter.Binder is set before calling BinaryFormatter.Deserialize -->
diff --git a/eng/CodeAnalysis.test.ruleset b/eng/CodeAnalysis.test.ruleset
index 1be671aaa3a3f8..cafbccdb87a77e 100644
--- a/eng/CodeAnalysis.test.ruleset
+++ b/eng/CodeAnalysis.test.ruleset
@@ -172,7 +172,8 @@
     <Rule Id="CA2248" Action="None" />          <!-- Provide correct 'enum' argument to 'Enum.HasFlag' -->
     <Rule Id="CA2249" Action="None" />          <!-- Consider using 'string.Contains' instead of 'string.IndexOf' -->
     <Rule Id="CA2250" Action="None" />          <!-- Use 'ThrowIfCancellationRequested' -->
-	  <Rule Id="CA2251" Action="None" />          <!-- Use 'string.Equals' -->
+    <Rule Id="CA2251" Action="None" />          <!-- Use 'string.Equals' -->
+    <Rule Id="CA2252" Action="None" />          <!-- This API requires opting into preview features -->
     <Rule Id="CA2300" Action="None" />          <!-- Do not use insecure deserializer BinaryFormatter -->
     <Rule Id="CA2301" Action="None" />          <!-- Do not call BinaryFormatter.Deserialize without first setting BinaryFormatter.Binder -->
     <Rule Id="CA2302" Action="None" />          <!-- Ensure BinaryFormatter.Binder is set before calling BinaryFormatter.Deserialize -->