diff --git a/manifest.toml b/manifest.toml
index 575b517..84ce50a 100644
--- a/manifest.toml
+++ b/manifest.toml
@@ -63,6 +63,7 @@ ram.runtime = "50M"
     [resources.install_dir]
 
     [resources.data_dir]
+    subdirs = ["attachments", "users", "app_data"]
 
     [resources.permissions]
     main.url = "/"
diff --git a/scripts/_common.sh b/scripts/_common.sh
index 5b7c67d..1a755c6 100644
--- a/scripts/_common.sh
+++ b/scripts/_common.sh
@@ -7,7 +7,7 @@
 #=================================================
 
 # Composer version
-YNH_COMPOSER_VERSION="2.3.5"
+YNH_COMPOSER_VERSION="2.5.8"
 
 #=================================================
 # PERSONAL HELPERS
diff --git a/scripts/install b/scripts/install
index fd3e3c2..8523085 100755
--- a/scripts/install
+++ b/scripts/install
@@ -61,17 +61,6 @@ ynh_script_progression --message="Installing $app with Composer..." --weight=10
 
 ynh_install_composer --install_args="--ignore-platform-reqs"
 
-#=================================================
-# CREATE DATA DIRECTORY
-#=================================================
-ynh_script_progression --message="Creating a data directory..." --weight=1
-
-mkdir -p $data_dir/{attachments,users,app_data}
-
-chmod 750 "$data_dir"
-chmod -R o-rwx "$data_dir"
-chown -R $app:www-data "$data_dir"
-
 #=================================================
 # ADD A CONFIGURATION
 #=================================================
@@ -89,6 +78,7 @@ ynh_script_progression --message="Adding an admin..." --weight=3
 
 #Generate the run-time configuration
 php$phpversion $install_dir/scripts/config_gen.php
+
 # create an admin account
 php$phpversion $install_dir/scripts/create_account.php $admin $password