diff --git a/Code-Sprint-QGIS-Grenoble,-March-2024.md b/Code-Sprint-QGIS-Grenoble,-March-2024.md
index 198a0e7..55a03d6 100644
--- a/Code-Sprint-QGIS-Grenoble,-March-2024.md
+++ b/Code-Sprint-QGIS-Grenoble,-March-2024.md
@@ -116,6 +116,8 @@ There are a lot of libraries to handle these 3d algorithms. However, `SFCGAL` se
 
 This workshop aims to present a study in order to add `SFCGAL` as a new QGIS optional dependency. `QGIS` already provides `geos` integration by using a class named `QgsGeos` which inherits from `QGsGeometryEngine`. `SFCGAL` could use a similar approach by creating a new `QgsSFCGAL` class and integrate some popular 3d algorithms such as buffer and intersection. 
 
+Notes : https://demo.hedgedoc.org/PYCg4wHmS0uMyQHBvUyzaA#
+
 ### Afternoon
 
 #### QGIS security process, how to prepare to CRA obligations ?