diff --git a/environment.yml b/environment.yml
index a7ff0fd54b9c0aeee57099bc9ebd374e64ab1f0f..1ad0ec8d4c79ee49cfd2ac6c804c215fcdad87e5 100644
--- a/environment.yml
+++ b/environment.yml
@@ -39,7 +39,7 @@ dependencies:
 - jupyter-book
 - mystmd
 - nodejs
-- nbgrader>=0.9.1
+#- nbgrader>=0.9.1
 - jupyterlab-deck
 
 # For computations
@@ -86,3 +86,4 @@ dependencies:
     - git+https://gitlab.com/travo-cr/travo.git@student-dashboard-actions
     - git+https://gitlab.dsi.universite-paris-saclay.fr/L1InfoInitiationScienceDonnees/Assets.git
     - git+https://gitlab.dsi.universite-paris-saclay.fr/MethNum/scripts.git
+    - git+https://github.com/brichet/nbgrader.git@local_formgrader
\ No newline at end of file