diff --git a/.DS_Store b/.DS_Store
new file mode 100644
index 0000000..9c7e095
Binary files /dev/null and b/.DS_Store differ
diff --git a/.github/ISSUE_TEMPLATE.md b/.github/ISSUE_TEMPLATE.md
new file mode 100755
index 0000000..2729a6b
--- /dev/null
+++ b/.github/ISSUE_TEMPLATE.md
@@ -0,0 +1,55 @@
+---
+name: Bug report
+about: When creating a bug report, please use the following template to provide all the relevant information and help debugging efficiently.
+
+---
+
+**How to post a meaningful bug report**
+1. *Read this whole template first.*
+2. *Determine if you are on the right place:*
+   - *If you were performing an action on the app from the webadmin or the CLI (install, update, backup, restore, change_url...), you are on the right place!*
+   - *Otherwise, the issue may be due to the app itself. Refer to its documentation or repository for help.*
+   - *When in doubt, post here and we will figure it out together.*
+3. *Delete the italic comments as you write over them below, and remove this guide.*
+--- 
+
+### Describe the bug
+
+*A clear and concise description of what the bug is.*
+
+### Context
+
+- Hardware: *VPS bought online / Old laptop or computer / Raspberry Pi at home / Internet Cube with VPN / Other ARM board / ...*
+- YunoHost version: x.x.x
+- I have access to my server: *Through SSH | through the webadmin | direct access via keyboard / screen | ...*
+- Are you in a special context or did you perform some particular tweaking on your YunoHost instance?: *no / yes*
+  - If yes, please explain:
+- Using, or trying to install package version/branch:
+- If upgrading, current package version: *can be found in the admin, or with `yunohost app info $app_id`*
+
+### Steps to reproduce
+
+- *If you performed a command from the CLI, the command itself is enough. For example:*
+    ```sh
+    sudo yunohost app install the_app
+    ```
+- *If you used the webadmin, please perform the equivalent command from the CLI first.*
+- *If the error occurs in your browser, explain what you did:*
+   1. *Go to '...'*
+   2. *Click on '...'*
+   3. *Scroll down to '...'*
+   4. *See error*
+
+### Expected behavior
+
+*A clear and concise description of what you expected to happen. You can remove this section if the command above is enough to understand your intent.*
+
+### Logs
+
+*When an operation fails, YunoHost provides a simple way to share the logs.*
+- *In the webadmin, the error message contains a link to the relevant log page. On that page, you will be able to 'Share with Yunopaste'. If you missed it, the logs of previous operations are also available under Tools > Logs.*
+- *In command line, the command to share the logs is displayed at the end of the operation and looks like `yunohost log display [log name] --share`. If you missed it, you can find the log ID of a previous operation using `yunohost log list`.*
+
+*After sharing the log, please copypaste directly the link provided by YunoHost (to help readability, no need to copypaste the entire content of the log here, just the link is enough...)*
+
+*If applicable and useful, add screenshots to help explain your problem.*
diff --git a/.github/PULL_REQUEST_TEMPLATE.md b/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100755
index 0000000..ef70e18
--- /dev/null
+++ b/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,16 @@
+## Problem
+
+- *Description of why you made this PR*
+
+## Solution
+
+- *And how do you fix that problem*
+
+## PR Status
+
+- [ ] Code finished and ready to be reviewed/tested
+- [ ] The fix/enhancement were manually tested (if applicable)
+
+## Automatic tests
+
+Automatic tests can be triggered on https://ci-apps-dev.yunohost.org/ *after creating the PR*, by commenting "!testme", "!gogogadgetoci" or "By the power of systemd, I invoke The Great App CI to test this Pull Request!". (N.B. : for this to work you need to be a member of the Yunohost-Apps organization)
diff --git a/.github/workflows/.DS_Store b/.github/workflows/.DS_Store
new file mode 100644
index 0000000..5008ddf
Binary files /dev/null and b/.github/workflows/.DS_Store differ
diff --git a/.github/workflows/updater.sh b/.github/workflows/updater.sh
new file mode 100755
index 0000000..602b2c1
--- /dev/null
+++ b/.github/workflows/updater.sh
@@ -0,0 +1,130 @@
+#!/bin/bash
+
+#=================================================
+# PACKAGE UPDATING HELPER
+#=================================================
+
+# This script is meant to be run by GitHub Actions
+# The YunoHost-Apps organisation offers a template Action to run this script periodically
+# Since each app is different, maintainers can adapt its contents so as to perform
+# automatic actions when a new upstream release is detected.
+
+# Remove this exit command when you are ready to run this Action
+exit 1
+
+#=================================================
+# FETCHING LATEST RELEASE AND ITS ASSETS
+#=================================================
+
+# Fetching information
+current_version=$(cat manifest.json | jq -j '.version|split("~")[0]')
+repo=$(cat manifest.json | jq -j '.upstream.code|split("https://github.com/")[1]')
+# Some jq magic is needed, because the latest upstream release is not always the latest version (e.g. security patches for older versions)
+version=$(curl --silent "https://api.github.com/repos/$repo/releases" | jq -r '.[] | select( .prerelease != true ) | .tag_name' | sort -V | tail -1)
+assets=($(curl --silent "https://api.github.com/repos/$repo/releases" | jq -r '[ .[] | select(.tag_name=="'$version'").assets[].browser_download_url ] | join(" ") | @sh' | tr -d "'"))
+
+# Later down the script, we assume the version has only digits and dots
+# Sometimes the release name starts with a "v", so let's filter it out.
+# You may need more tweaks here if the upstream repository has different naming conventions. 
+if [[ ${version:0:1} == "v" || ${version:0:1} == "V" ]]; then
+    version=${version:1}
+fi
+
+# Setting up the environment variables
+echo "Current version: $current_version"
+echo "Latest release from upstream: $version"
+echo "VERSION=$version" >> $GITHUB_ENV
+# For the time being, let's assume the script will fail
+echo "PROCEED=false" >> $GITHUB_ENV
+
+# Proceed only if the retrieved version is greater than the current one
+if ! dpkg --compare-versions "$current_version" "lt" "$version" ; then
+    echo "::warning ::No new version available"
+    exit 0
+# Proceed only if a PR for this new version does not already exist
+elif git ls-remote -q --exit-code --heads https://github.com/$GITHUB_REPOSITORY.git ci-auto-update-v$version ; then
+    echo "::warning ::A branch already exists for this update"
+    exit 0
+fi
+
+# Each release can hold multiple assets (e.g. binaries for different architectures, source code, etc.)
+echo "${#assets[@]} available asset(s)"
+
+#=================================================
+# UPDATE SOURCE FILES
+#=================================================
+
+# Here we use the $assets variable to get the resources published in the upstream release.
+# Here is an example for Grav, it has to be adapted in accordance with how the upstream releases look like.
+
+# Let's loop over the array of assets URLs
+for asset_url in ${assets[@]}; do
+
+echo "Handling asset at $asset_url"
+
+# Assign the asset to a source file in conf/ directory
+# Here we base the source file name upon a unique keyword in the assets url (admin vs. update)
+# Leave $src empty to ignore the asset
+case $asset_url in
+  *".zip")
+    src="app"
+    ;;
+esac
+
+# If $src is not empty, let's process the asset
+if [ ! -z "$src" ]; then
+
+# Create the temporary directory
+tempdir="$(mktemp -d)"
+
+# Download sources and calculate checksum
+filename=${asset_url##*/}
+curl --silent -4 -L $asset_url -o "$tempdir/$filename"
+checksum=$(sha256sum "$tempdir/$filename" | head -c 64)
+
+# Delete temporary directory
+rm -rf $tempdir
+
+# Get extension
+if [[ $filename == *.tar.gz ]]; then
+  extension=tar.gz
+else
+  extension=${filename##*.}
+fi
+
+# Rewrite source file
+cat <<EOT > conf/$src.src
+SOURCE_URL=$asset_url
+SOURCE_SUM=$checksum
+SOURCE_SUM_PRG=sha256sum
+SOURCE_FORMAT=zip
+SOURCE_IN_SUBDIR=true
+SOURCE_EXTRACT=true
+EOT
+echo "... conf/$src.src updated"
+
+else
+echo "... asset ignored"
+fi
+
+done
+
+#=================================================
+# SPECIFIC UPDATE STEPS
+#=================================================
+
+# Any action on the app's source code can be done.
+# The GitHub Action workflow takes care of committing all changes after this script ends.
+
+#=================================================
+# GENERIC FINALIZATION
+#=================================================
+
+# Replace new version in manifest
+echo "$(jq -s --indent 4 ".[] | .version = \"$version~ynh1\"" manifest.json)" > manifest.json
+
+# No need to update the README, yunohost-bot takes care of it
+
+# The Action will proceed only if the PROCEED environment variable is set to true
+echo "PROCEED=true" >> $GITHUB_ENV
+exit 0
diff --git a/conf/app.src b/conf/app.src
index 0702e37..31fbb51 100644
--- a/conf/app.src
+++ b/conf/app.src
@@ -1,7 +1,6 @@
-SOURCE_URL=https://github.com/elabftw/elabftw/archive/refs/tags/4.0.11.zip
-SOURCE_SUM=c1e093b4396712976ad89d7bbfb4db74c20d8df5a1f92bb378422ba9afe525a5
+SOURCE_URL=https://github.com/elabftw/elabftw/archive/refs/tags/4.2.1.zip
+SOURCE_SUM=fde2c1ccd81c02666b4d08d0bfd88bfbdfcfdba8607f6c75c4156ace5e03009b
 SOURCE_SUM_PRG=sha256sum
 SOURCE_FORMAT=zip
 SOURCE_IN_SUBDIR=true
 SOURCE_EXTRACT=true
-SOURCE_FILENAME=
\ No newline at end of file
diff --git a/scripts/_common.sh b/scripts/_common.sh
index d8b9a81..8db66e3 100644
--- a/scripts/_common.sh
+++ b/scripts/_common.sh
@@ -5,7 +5,7 @@
 # COMMON VARIABLES
 #=================================================
 
-nodejs_version=14
+nodejs_version=16
 
 YNH_PHP_VERSION="8.0"
 
diff --git a/scripts/install b/scripts/install
index feb5acc..2384084 100644
--- a/scripts/install
+++ b/scripts/install
@@ -49,6 +49,13 @@ ynh_script_progression --message="Storing installation settings..." --weight=1
 ynh_app_setting_set --app=$app --key=domain --value=$domain
 ynh_app_setting_set --app=$app --key=path --value=$path_url
 
+#=================================================
+# INSTALL DEPENDENCIES
+#=================================================
+ynh_script_progression --message="Installing dependencies..." --weight=1
+
+ynh_install_app_dependencies $pkg_dependencies
+
 #=================================================
 # STANDARD MODIFICATIONS
 #=================================================
@@ -117,6 +124,7 @@ ynh_script_progression --message="Installing Composer..." --weight=10
 
 ynh_secure_remove --file="$final_path/composer.lock"
 ynh_install_composer
+
 chown -R $app "$final_path/.composer"
 chmod 777 -R "$final_path"
 
diff --git a/scripts/remove b/scripts/remove
index 00da59c..627d759 100644
--- a/scripts/remove
+++ b/scripts/remove
@@ -36,6 +36,14 @@ ynh_script_progression --message="Removing the MySQL database..." --weight=4
 # Remove a database if it exists, along with the associated user
 ynh_mysql_remove_db --db_user=$db_name --db_name=$db_name
 
+#=================================================
+# REMOVE DEPENDENCIES
+#=================================================
+ynh_script_progression --message="Removing dependencies..." --weight=1
+
+# Remove metapackage and its dependencies
+ynh_remove_app_dependencies
+
 #=================================================
 # REMOVE APP MAIN DIR
 #=================================================
diff --git a/scripts/restore b/scripts/restore
index 8a14815..ff15826 100644
--- a/scripts/restore
+++ b/scripts/restore
@@ -73,6 +73,14 @@ ynh_script_progression --message="Restoring the PHP-FPM configuration..." --weig
 
 ynh_restore_file --origin_path="/etc/php/$phpversion/fpm/pool.d/$app.conf"
 
+#=================================================
+# REINSTALL DEPENDENCIES
+#=================================================
+ynh_script_progression --message="Reinstalling dependencies..." --weight=1
+
+# Define and install dependencies
+ynh_install_app_dependencies $pkg_dependencies
+
 #=================================================
 # RESTORE THE MYSQL DATABASE
 #=================================================
diff --git a/scripts/upgrade b/scripts/upgrade
index 9f48d62..ec89e1b 100644
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -102,6 +102,13 @@ ynh_script_progression --message="Upgrading NGINX web server configuration..." -
 # Create a dedicated NGINX config
 ynh_add_nginx_config
 
+#=================================================
+# UPGRADE DEPENDENCIES
+#=================================================
+ynh_script_progression --message="Upgrading dependencies..." --weight=1
+
+ynh_install_app_dependencies $pkg_dependencies
+
 #=================================================
 # PHP-FPM CONFIGURATION
 #=================================================