diff --git a/scripts/upgrade b/scripts/upgrade
index f50cde2..1cd65ce 100644
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -162,6 +162,10 @@ ynh_script_progression --message="Updating a config file..."
 
 config_file="$final_path/.config/syncthing/config.xml"
 
+ynh_backup_if_checksum_is_different --file="$config_file"
+# Recalculate and store the checksum of the file for the next upgrade.
+ynh_store_file_checksum --file="$config_file"
+
 #ynh_add_config --template="../conf/config.xml" --destination="$config_file"
 
 chmod 400 "$config_file"