# Trying to upgrade the AWS ParallelCluster API stack
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If you get an error such as `UPDATE_FAILED` when you try to upgrade the AWS ParallelCluster API stack, we recommend that you check for a solution in the **Known Issues** sections of the [AWS ParallelCluster Wiki](https://github.com/aws/aws-parallelcluster/wiki) on GitHub. For example, see [ParallelCluster API Stack Upgrade Fails for ECR resources](https://github.com/aws/aws-parallelcluster/wiki/(3.0.0-3.1.4)-ParallelCluster-API-Stack-Upgrade-Fails-for-ECR-resources), which identifies one possible issue and provides mitigation options.