diff --git a/environment.yml b/environment.yml
index 6bc5dfc36dfc68ef0e81ff2659b7ee4ede612670..9988a722e3fc955855d822ddc42cf64a9b908f6d 100644
--- a/environment.yml
+++ b/environment.yml
@@ -12,7 +12,7 @@ dependencies:
 
 ##############################################################################
 # JupyterLab
-- jupyterlab>=4
+- jupyterlab==4.0.12
 - jupyterlab-language-pack-fr-FR
 - nbgitpuller
 #- jupyter-collaboration