diff --git a/src/lib/index.jsx b/src/lib/index.jsx
index 981701c..f285731 100644
--- a/src/lib/index.jsx
+++ b/src/lib/index.jsx
@@ -78,6 +78,9 @@ const listboxRules = PropTypes.oneOfType([
 
 Turnstone.propTypes = {
   autoFocus: PropTypes.bool,
+  cancelButton: PropTypes.bool,
+  cancelButtonAriaLabel: PropTypes.string,
+  cancelButtonText: PropTypes.string,
   clearButton: PropTypes.bool,
   clearButtonAriaLabel: PropTypes.string,
   clearButtonText: PropTypes.string,