# Turborepo v2.8.13 — Release & Upgrade Intelligence
- **Product:** Turborepo (https://turbo.build)
- **Version:** v2.8.13
- **Released:** Mar 03, 2026
- **Impact Score:** 5/10
- **Breaking Changes:** Not verified
- **Canonical Analysis:** https://changelogs.us/turborepo/updates/v2.8.13/

## Executive Summary (TL;DR)
Turborepo v2.8.13. Source highlight: feat: Add experimentalObservability with an OTel backend

## New Features
- feat: Add experimentalObservability with an OTel backend
- feat: Add with-otel example with pre-configured Grafana dashboard
- test: Add lockfile fixture for yarn berry resolution pruning (issue #2791)
- test: Add lockfile fixture for pnpm v9 injected workspace deps (issue #8243)
- chore: Trim unused dependency features for faster compilation
- perf: Disable unused zstd default features to reduce C compilation

## Improvements
- perf: Stream file contents during hashing to lower memory usage
- perf: Use stack-allocated OidHash in FileHashes and skip expanded hashes on normal runs
- refactor: Clean up test infrastructure + improve test quality
- perf: Speed up lockfile test suite
- perf: Optimize npm lockfile parser
- perf: Eliminate per-directory stat syscalls in untracked file detection

## Bug Fixes
- fix: Duplicate /signup? in Vercel URL
- examples: Fix markdown links inside code blocks in basic README
- fix: Suppress npm upgrade notices in integration tests and consolidate test helpers
- fix: Replace flaky pnpx symlink-dir with native NTFS junctions in find-turbo test
- fix: Prevent corepack download prompt from hanging prysk tests on Windows
- fix: Send OTEL metrics without requiring `--summarize` flag

## Upgrade Command
```bash
npm install --save-dev --save-exact turbo@2.8.13
```