diff --git a/README.md b/README.md
index 689c4f6..6746d69 100644
--- a/README.md
+++ b/README.md
@@ -18,7 +18,7 @@ If you don't have YunoHost, please consult [the guide](https://yunohost.org/#/in
 JupyterLab is the next-generation user interface for Project Jupyter offering all the familiar building blocks of the classic Jupyter Notebook (notebook, terminal, text editor, file browser, rich outputs, etc.) in a flexible and powerful user interface. JupyterLab will eventually replace the classic Jupyter Notebook.
 
 
-**Shipped version:** 3.5.0~ynh1
+**Shipped version:** 3.5.2~ynh1
 
 **Demo:** https://mybinder.org/v2/gh/jupyterlab/jupyterlab-demo/master?urlpath=lab/tree/demo
 
@@ -26,6 +26,39 @@ JupyterLab is the next-generation user interface for Project Jupyter offering al
 
 ![Screenshot of JupyterLab](./doc/screenshots/jupyterlab.png)
 
+## Disclaimers / important information
+
+## Updating configuration files
+
+Install the new version of the app with:
+
+```bash
+sudo yunohost app install https://github.com/YunoHost-Apps/jupyterlab_ynh/tree/testing  
+```
+
+Navigate to the installation path (`/opt/jupyterlab` by default), and run :
+
+```bash
+pipenv shell
+```
+
+You are now in the virtual environment of jupyterlab. You can execute these two commands:
+
+- To generate the `jupyterhub_config.py` file:
+
+```bash
+jupyterhub --generate-config
+```
+
+- To generate the `jupyter_notebook_config.py` file:
+
+```bash
+jupyter notebook --generate-config
+cp $HOME/.jupyter/jupyter_notebook_config.py ./
+```
+
+You can now update the old template files with the new one.
+
 ## Documentation and resources
 
 * Official app website: <https://jupyter.org>
diff --git a/README_fr.md b/README_fr.md
index 9e714b3..8334f5b 100644
--- a/README_fr.md
+++ b/README_fr.md
@@ -18,7 +18,7 @@ Si vous n'avez pas YunoHost, regardez [ici](https://yunohost.org/#/install) pour
 JupyterLab is the next-generation user interface for Project Jupyter offering all the familiar building blocks of the classic Jupyter Notebook (notebook, terminal, text editor, file browser, rich outputs, etc.) in a flexible and powerful user interface. JupyterLab will eventually replace the classic Jupyter Notebook.
 
 
-**Version incluse :** 3.5.0~ynh1
+**Version incluse :** 3.5.2~ynh1
 
 **Démo :** https://mybinder.org/v2/gh/jupyterlab/jupyterlab-demo/master?urlpath=lab/tree/demo
 
@@ -26,6 +26,39 @@ JupyterLab is the next-generation user interface for Project Jupyter offering al
 
 ![Capture d'écran de JupyterLab](./doc/screenshots/jupyterlab.png)
 
+## Avertissements / informations importantes
+
+## Updating configuration files
+
+Install the new version of the app with:
+
+```bash
+sudo yunohost app install https://github.com/YunoHost-Apps/jupyterlab_ynh/tree/testing  
+```
+
+Navigate to the installation path (`/opt/jupyterlab` by default), and run :
+
+```bash
+pipenv shell
+```
+
+You are now in the virtual environment of jupyterlab. You can execute these two commands:
+
+- To generate the `jupyterhub_config.py` file:
+
+```bash
+jupyterhub --generate-config
+```
+
+- To generate the `jupyter_notebook_config.py` file:
+
+```bash
+jupyter notebook --generate-config
+cp $HOME/.jupyter/jupyter_notebook_config.py ./
+```
+
+You can now update the old template files with the new one.
+
 ## Documentations et ressources
 
 * Site officiel de l'app : <https://jupyter.org>
diff --git a/doc/DISCLAIMER.md b/doc/DISCLAIMER.md
index e69de29..d2ae6d9 100644
--- a/doc/DISCLAIMER.md
+++ b/doc/DISCLAIMER.md
@@ -0,0 +1,30 @@
+## Updating configuration files
+
+Install the new version of the app with:
+
+```bash
+sudo yunohost app install https://github.com/YunoHost-Apps/jupyterlab_ynh/tree/testing  
+```
+
+Navigate to the installation path (`/opt/jupyterlab` by default), and run :
+
+```bash
+pipenv shell
+```
+
+You are now in the virtual environment of jupyterlab. You can execute these two commands:
+
+- To generate the `jupyterhub_config.py` file:
+
+```bash
+jupyterhub --generate-config
+```
+
+- To generate the `jupyter_notebook_config.py` file:
+
+```bash
+jupyter notebook --generate-config
+cp $HOME/.jupyter/jupyter_notebook_config.py ./
+```
+
+You can now update the old template files with the new one.
diff --git a/manifest.json b/manifest.json
index 5b26860..d7cbf5b 100644
--- a/manifest.json
+++ b/manifest.json
@@ -6,7 +6,7 @@
         "en": "Code console environment for running Python code interactively",
         "fr": "Console de code pour exécuter du code Python de manière interactive"
     },
-    "version": "3.5.0~ynh1",
+    "version": "3.5.2~ynh1",
     "url": "https://jupyter.org",
     "upstream": {
         "license": "BSD-3-Clause",
diff --git a/scripts/_common.sh b/scripts/_common.sh
index ed30efa..3d24115 100644
--- a/scripts/_common.sh
+++ b/scripts/_common.sh
@@ -9,7 +9,7 @@ pkg_dependencies="python3-dev python3-pip"
 
 nodejs_version="16"
 
-jupyterlab_version="3.5.0"
+jupyterlab_version="3.5.2"
 
 #=================================================
 # PERSONAL HELPERS