diff --git a/src/index.d.ts b/src/index.d.ts
index feff85d20d..f3181728f3 100644
--- a/src/index.d.ts
+++ b/src/index.d.ts
@@ -300,6 +300,7 @@ export {
   // All validation rules in the GraphQL Specification.
   specifiedRules,
   // Individual validation rules.
+  ExecutableDefinitionsRule,
   FieldsOnCorrectTypeRule,
   FragmentsOnCompositeTypesRule,
   KnownArgumentNamesRule,
diff --git a/src/index.js b/src/index.js
index e8d569cf39..e92c936595 100644
--- a/src/index.js
+++ b/src/index.js
@@ -298,6 +298,7 @@ export {
   // All validation rules in the GraphQL Specification.
   specifiedRules,
   // Individual validation rules.
+  ExecutableDefinitionsRule,
   FieldsOnCorrectTypeRule,
   FragmentsOnCompositeTypesRule,
   KnownArgumentNamesRule,