---
version: "v1.0.5"
category: "performance-improvements"
---

#### `stack output` fetches unit outputs in parallel

`terragrunt stack output` now fetches outputs from multiple units at the same time, which is noticeably faster on larger stacks. Use the existing `--parallelism` flag (or `TG_PARALLELISM`) to lower concurrency if you need to.

```bash
terragrunt stack output --parallelism 4
```
