diff --git a/scripts/install b/scripts/install
index 8c3a656..e702c43 100755
--- a/scripts/install
+++ b/scripts/install
@@ -78,7 +78,7 @@ ynh_app_setting_set --app=$app --key=port --value=$port
 #=================================================
 ynh_script_progression --message="Installing dependencies..."
 
-ynh_install_app_dependencies $pkg_dependencies $build_pkg_dependencies
+ynh_exec_warn_less ynh_install_app_dependencies $pkg_dependencies $build_pkg_dependencies
 ynh_install_nodejs --nodejs_version=$nodejs_version
 ynh_install_extra_app_dependencies --repo="deb https://dl.yarnpkg.com/debian/ stable main" --package="yarn" --key="https://dl.yarnpkg.com/debian/pubkey.gpg"
 
@@ -167,29 +167,29 @@ pushd "$final_path/backend"
 	set +u;
 	source env/bin/activate
 	set -u;
-	pip install -r requirements-build.txt
-	pip install -r requirements.txt
-	pip install -r requirements-full-preview-generator.txt
-	pip install -r requirements-db-postgres.txt
-	pip install -e "."
+	ynh_exec_warn_less pip install -r requirements-build.txt
+	ynh_exec_warn_less pip install -r requirements.txt
+	ynh_exec_warn_less pip install -r requirements-full-preview-generator.txt
+	ynh_exec_warn_less pip install -r requirements-db-postgres.txt
+	ynh_exec_warn_less pip install -e "."
 	mkdir sessions_data sessions_lock previews
-	tracimcli db init
-	tracimcli user create -e $admin_mail -u $admin --lang $language -p $password --profile administrators
-	tracimcli user delete -l admin@admin.admin
+	ynh_exec_warn_less tracimcli db init
+	ynh_exec_warn_less tracimcli user create -e $admin_mail -u $admin --lang $language -p $password --profile administrators
+	ynh_exec_warn_less tracimcli user delete -l admin@admin.admin
 	set +u;
 	deactivate
 	set -u;
-	$ynh_npm install "i18next-conv@<8" -g
-	./update_i18n_json_file.sh || exit 1
+	ynh_exec_warn_less $ynh_npm install "i18next-conv@<8" -g
+	ynh_exec_warn_less ./update_i18n_json_file.sh || exit 1
 popd
 
 pushd "$final_path"
 	echo 'nodeLinker: node-modules' >> .yarnrc.yml
-	yarn install
-	./build_full_frontend.sh
+	ynh_exec_warn_less yarn install
+	ynh_exec_warn_less ./build_full_frontend.sh
 popd
 
-ynh_install_app_dependencies $pkg_dependencies
+ynh_exec_warn_less ynh_install_app_dependencies $pkg_dependencies
 
 chmod 750 "$final_path"
 chmod -R o-rwx "$final_path"
diff --git a/scripts/restore b/scripts/restore
index 7a88236..a6beac1 100755
--- a/scripts/restore
+++ b/scripts/restore
@@ -94,7 +94,7 @@ chown -R $app:www-data "$datadir"
 ynh_script_progression --message="Reinstalling dependencies..."
 
 # Define and install dependencies
-ynh_install_app_dependencies $pkg_dependencies
+ynh_exec_warn_less ynh_install_app_dependencies $pkg_dependencies
 ynh_install_nodejs --nodejs_version=$nodejs_version
 ynh_install_extra_app_dependencies --repo="deb https://dl.yarnpkg.com/debian/ stable main" --package="yarn" --key="https://dl.yarnpkg.com/debian/pubkey.gpg"
 
diff --git a/scripts/upgrade b/scripts/upgrade
index 6ae77ff..d9a11a7 100644
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -110,7 +110,7 @@ ynh_add_nginx_config
 #=================================================
 ynh_script_progression --message="Upgrading dependencies..."
 
-ynh_install_app_dependencies $pkg_dependencies $build_pkg_dependencies
+ynh_exec_warn_less ynh_install_app_dependencies $pkg_dependencies $build_pkg_dependencies
 ynh_install_nodejs --nodejs_version=$nodejs_version
 ynh_install_extra_app_dependencies --repo="deb https://dl.yarnpkg.com/debian/ stable main" --package="yarn" --key="https://dl.yarnpkg.com/debian/pubkey.gpg"
 
@@ -143,26 +143,27 @@ pushd "$final_path/backend"
 	set +u;
 	source env/bin/activate
 	set -u;
-	pip install -r requirements-build.txt
-	pip install -r requirements.txt
-	pip install -r requirements-full-preview-generator.txt
-	pip install -r requirements-db-postgres.txt
-	pip install -e "."
+	ynh_exec_warn_less pip install -r requirements-build.txt
+	ynh_exec_warn_less ynh_exec_warn_less pip install -r requirements.txt
+	ynh_exec_warn_less pip install -r requirements-full-preview-generator.txt
+	ynh_exec_warn_less pip install -r requirements-db-postgres.txt
+	ynh_exec_warn_less pip install -e "."
 	mkdir sessions_data sessions_lock previews
+	ynh_exec_warn_less alembic -c development.ini upgrade head
 	set +u;
 	deactivate
 	set -u;
-	$ynh_npm install "i18next-conv@<8" -g
-	./update_i18n_json_file.sh || exit 1
+	ynh_exec_warn_less $ynh_npm install "i18next-conv@<8" -g
+	ynh_exec_warn_less ./update_i18n_json_file.sh || exit 1
 popd
 
 pushd "$final_path"
 	echo 'nodeLinker: node-modules' >> .yarnrc.yml
-	yarn install
-	./build_full_frontend.sh
+	ynh_exec_warn_less yarn install
+	ynh_exec_warn_less ./build_full_frontend.sh
 popd
 
-ynh_install_app_dependencies $pkg_dependencies
+ynh_exec_warn_less ynh_install_app_dependencies $pkg_dependencies
 
 chmod 750 "$final_path"
 chmod -R o-rwx "$final_path"