diff --git a/vscode.proposed.d.ts b/vscode.proposed.d.ts
index 5c82fca780..0ab6682f81 100644
--- a/vscode.proposed.d.ts
+++ b/vscode.proposed.d.ts
@@ -323,11 +323,17 @@ declare module 'vscode' {
 		 * The range will always be revealed in the center of the viewport.
 		 */
 		InCenter = 1,
+
 		/**
 		 * If the range is outside the viewport, it will be revealed in the center of the viewport.
 		 * Otherwise, it will be revealed with as little scrolling as possible.
 		 */
 		InCenterIfOutsideViewport = 2,
+
+		/**
+		 * The range will always be revealed at the top of the viewport.
+		 */
+		AtTop = 3
 	}
 
 	export interface NotebookEditor {