diff --git a/README.md b/README.md
index 8c041222c46ca6f169f6f7eb5521cb0502ebc11e..cf55d3cdb37dde35bef2c0e5ea9b42a484113d04 100644
--- a/README.md
+++ b/README.md
@@ -41,7 +41,7 @@ conda activate formation_cpp_2020
 * Then you can run the notebook by going **into its root directory** (or internal links won't work...) in a terminal and typing:
 
 ```
-jupyter notebook
+jupyter lab
 ```
 
 __BEWARE__: I **strongly advise** to use a dedicated environment for the notebook: the ultimate goal is to use a real C++ environment for your project, and the anaconda environment hides the native C++ compiler on your machine.
diff --git a/environment.yml b/environment.yml
index 2b140284e796e8fb7a6bbbb181e81900da29d0c4..98aac6071481478d5bf5e0bd7e630d99c442150d 100644
--- a/environment.yml
+++ b/environment.yml
@@ -4,6 +4,7 @@ channels:
 dependencies:
   - python>=3.7
   - jupyter
+  - jupyterlab
   - xeus-cling 
   - notebook 
-  - jupyter_contrib_nbextensions
\ No newline at end of file
+  - jupyter_contrib_nbextensions