diff --git a/scripts/upgrade b/scripts/upgrade
index 7b0ebed..37afa9f 100644
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -56,10 +56,13 @@ if [ "$upgrade_type" == "UPGRADE_APP" ]
 then
 	ynh_script_progression --message="Upgrading source files..." --weight=3
 
+	ynh_secure_remove --file="$final_path"
 	# Download, check integrity, uncompress and patch the source from app.src
 	ynh_setup_source --dest_dir="$final_path"
 fi
 
+ynh_install_composer --install_args="--ignore-platform-reqs"
+
 chmod 750 "$final_path"
 chmod -R o-rwx "$final_path"
 chown -R $app:www-data "$final_path"
@@ -92,10 +95,10 @@ ynh_add_fpm_config
 #=================================================
 ynh_script_progression --message="Updating a configuration file..." --weight=1
 
-ynh_add_config --template="../conf/qcm-dist.conf" --destination="$final_path/conf/qcm-dist.conf"
+ynh_add_config --template="../conf/qcm-dist.conf" --destination="$final_path/conf/qcm.php"
 
-chmod 400 "$final_path/conf/qcm-dist.conf"
-chown $app:$app "$final_path/conf/qcm-dist.conf"
+chmod 400 "$final_path/conf/qcm.php"
+chown $app:$app "$final_path/conf/qcm.php"
 
 #=================================================
 # GENERIC FINALIZATION