diff --git a/src/language/kinds.ts b/src/language/kinds.ts
index cd05f66a3b..ae52820ed0 100644
--- a/src/language/kinds.ts
+++ b/src/language/kinds.ts
@@ -12,6 +12,12 @@ enum Kind {
   SELECTION_SET = 'SelectionSet',
   FIELD = 'Field',
   ARGUMENT = 'Argument',
+  FRAGMENT_ARGUMENT = 'FragmentArgument',
+
+  /** Nullability Modifiers */
+  LIST_NULLABILITY_OPERATOR = 'ListNullabilityOperator',
+  NON_NULL_ASSERTION = 'NonNullAssertion',
+  ERROR_BOUNDARY = 'ErrorBoundary',
 
   /** Fragments */
   FRAGMENT_SPREAD = 'FragmentSpread',