diff --git a/lib/jsdoc/src/astbuilder.js b/lib/jsdoc/src/astbuilder.js
index 99b6d414..3e22bf34 100644
--- a/lib/jsdoc/src/astbuilder.js
+++ b/lib/jsdoc/src/astbuilder.js
@@ -20,7 +20,8 @@ var parserOptions = exports.parserOptions = {
         'functionSent',
         'jsx',
         'numericSeparator',
-        'objectRestSpread'
+        'objectRestSpread',
+        'optionalChaining'
     ]
 };