diff --git a/libraries/botframework-schema/etc/botframework-schema.api.md b/libraries/botframework-schema/etc/botframework-schema.api.md
index f4e015eee5..2393dc813d 100644
--- a/libraries/botframework-schema/etc/botframework-schema.api.md
+++ b/libraries/botframework-schema/etc/botframework-schema.api.md
@@ -3038,7 +3038,7 @@ export function SignInCardView(cardBar: CardBarComponent, header: CardTextCompon
 // @public
 export interface SignInCardViewParameters extends BaseCardViewParameters {
     body: [CardTextComponent] | undefined;
-    cardViewType: 'signIn';
+    cardViewType: 'signIn' | 'signInSso';
     footer?: [CardButtonComponent];
     header: [CardTextComponent];
 }
diff --git a/libraries/botframework-schema/src/sharepoint/cardView/cardViewParameters.ts b/libraries/botframework-schema/src/sharepoint/cardView/cardViewParameters.ts
index 1e2cf25175..bc4561d08c 100644
--- a/libraries/botframework-schema/src/sharepoint/cardView/cardViewParameters.ts
+++ b/libraries/botframework-schema/src/sharepoint/cardView/cardViewParameters.ts
@@ -114,7 +114,7 @@ export interface SignInCardViewParameters extends BaseCardViewParameters {
     /**
      * Card View type
      */
-    cardViewType: 'signIn';
+    cardViewType: 'signIn' | 'signInSso';
     /**
      * Header area components.
      */