# Updating an application

To update an application to the current version of wolkenkit follow the steps given below.

# package.json

Previous version (3.0.0)

"wolkenkit": {
  "application": "your-app",
  "runtime": {
    "version": "3.0.0"
  },
  "...": "..."
}

Current version (3.1.0)

"wolkenkit": {
  "application": "your-app",
  "runtime": {
    "version": "3.1.0"
  },
  "...": "..."
}

# Enabling persistence

If you have been using the --shared-key flag in the past to enable persistence, you now also need to provide the --persist flag. This means that starting your application with enabled persistence now requires the following command:

$ wolkenkit start --shared-key <shared-key> --persist

For details, see protecting an application and storing data permanently.