diff --git a/scripts/install b/scripts/install
index 7479967..35e360c 100644
--- a/scripts/install
+++ b/scripts/install
@@ -39,6 +39,8 @@ ynh_install_composer
 COMPOSER_ALLOW_SUPERUSER=1 "$app" ynh_composer_exec --commands="install"
 COMPOSER_ALLOW_SUPERUSER=1 "$app" ynh_composer_exec --commands="movim:migrate"
 
+chown -R "$app:www-data" "$install_dir"
+
 #=================================================
 # SYSTEM CONFIGURATION
 #=================================================
diff --git a/scripts/upgrade b/scripts/upgrade
index 0433992..e30fdac 100644
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -46,6 +46,8 @@ ynh_exec_warn_less COMPOSER_ALLOW_SUPERUSER=1 ynh_composer_exec --commands="conf
 ynh_exec_warn_less COMPOSER_ALLOW_SUPERUSER=1 ynh_composer_exec --commands="update --no-interaction --quiet"
 ynh_exec_warn_less COMPOSER_ALLOW_SUPERUSER=1 ynh_composer_exec --commands="movim:migrate --quiet"
 
+chown -R "$app:www-data" "$install_dir"
+
 #=================================================
 # REAPPLY SYSTEM CONFIGURATIONS
 #=================================================