diff --git a/apollo4.d.ts b/apollo4.d.ts
index 60a4025..98e801e 100644
--- a/apollo4.d.ts
+++ b/apollo4.d.ts
@@ -1,6 +1,8 @@
-import {GraphQLSchema} from "graphql";
+import {DocumentNode, GraphQLSchema} from "graphql";
 import {ApolloServerPlugin} from '@apollo/server';
 
-export const constraintDirectiveTypeDefs: string
+export const constraintDirectiveTypeDefs: string;
+
+export const constraintDirectiveTypeDefsGql: DocumentNode;
 
 export function createApollo4QueryValidationPlugin ( options: { schema: GraphQLSchema } ) : ApolloServerPlugin;
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