diff --git a/types/n3/index.d.ts b/types/n3/index.d.ts
index 98f17f9302..0c8c992030 100644
--- a/types/n3/index.d.ts
+++ b/types/n3/index.d.ts
@@ -2,6 +2,7 @@
 // Project: https://github.com/RubenVerborgh/N3.js
 // Definitions by: Fred Eisele <https://github.com/phreed>
 //                 Ruben Taelman <https://github.com/rubensworks>
+//                 Laurens Rietveld <https://github.com/LaurensRietveld>
 // Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
 // TypeScript Version: 2.3
 
diff --git a/types/rdf-js/index.d.ts b/types/rdf-js/index.d.ts
index 01afd89108..0ef3535c1e 100644
--- a/types/rdf-js/index.d.ts
+++ b/types/rdf-js/index.d.ts
@@ -1,6 +1,7 @@
 // Type definitions for the RDFJS specification 1.0
 // Project: https://github.com/rdfjs/representation-task-force
 // Definitions by: Ruben Taelman <https://github.com/rubensworks>
+//                 Laurens Rietveld <https://github.com/LaurensRietveld>
 // Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
 // TypeScript Version: 2.3