diff --git a/packages/terra-modal-manager/src/ModalManager.jsx b/packages/terra-modal-manager/src/ModalManager.jsx
index 1dbce95b2f..e037380095 100644
--- a/packages/terra-modal-manager/src/ModalManager.jsx
+++ b/packages/terra-modal-manager/src/ModalManager.jsx
@@ -41,7 +41,7 @@ const propTypes = {
    */
   closeOnOutsideClick: PropTypes.bool,
   /**
-   * Z-Index layer to apply to the ModalContent and ModalOverlay. Valid values are the standard modal layer: '6000', and the max layer: '8000'.
+   * Z-Index layer to apply to the ModalContent and ModalOverlay. Valid values are the standard modal layer: '6000', and the max layer: '9000'.
    */
   zIndex: PropTypes.oneOf(zIndexes),
 };