diff --git a/pages/common/mp4box.md b/pages/common/mp4box.md
index 2f953c9621..f790f499c1 100644
--- a/pages/common/mp4box.md
+++ b/pages/common/mp4box.md
@@ -1,6 +1,7 @@
 # mp4box
 
 > MPEG-4 Systems Toolbox - Muxes streams into MP4 container.
+> More information: <https://gpac.wp.imt.fr/mp4box>.
 
 - Display information about an existing MP4 file: