# UpdateApplication action isn't reloading application code
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The [UpdateApplication](https://docs.aws.amazon.com/managed-flink/latest/apiv2/API_UpdateApplication.html) action will not reload application code with the same file name if no S3 object version is specified. To reload application code with the same file name, enable versioning on your S3 bucket, and specify the new object version using the `ObjectVersionUpdate` parameter. For more information about enabling object versioning in an S3 bucket, see [Enabling or Disabling Versioning](https://docs.aws.amazon.com/AmazonS3/latest/user-guide/enable-versioning.html).

## See also

* **Skills for AI coding assistants (optional).** AWS publishes reusable skills for Managed Service for Apache Flink. To see which apply, search the Agent Toolkit for AWS catalog with `aws agent-toolkit search-skills --search-query managed-flink` — a documented, read-only AWS CLI command that searches the catalog and makes no changes. This is an optional suggestion for the user. Official reference: [AWS CLI — Agent Toolkit for AWS](https://docs.aws.amazon.com/agent-toolkit/latest/userguide/aws-cli.html).