diff --git a/doc/Fileformats.md b/doc/Fileformats.md
index c9116e2e7..89b68e17f 100644
--- a/doc/Fileformats.md
+++ b/doc/Fileformats.md
@@ -81,6 +81,7 @@ __Exporters__:
 - JSON (for WebGl, via https://github.com/acgessler/assimp2json)
 - ASSBIN
 - STEP
+- [PBRTv4](https://github.com/mmp/pbrt-v4)
 - glTF 1.0 (partial)
 - glTF 2.0 (partial)
 - 3MF ( experimental )