# New Release: Ultralytics v8.4.18

**URL:** <https://community.ultralytics.com/t/new-release-ultralytics-v8-4-18/1834>\
**Category:** Discussion\
**Tags:** ultralytics-official, releases, announcements\
**Created:** [February 27, 2026, 1:26pm UTC](https://community.ultralytics.com/t/new-release-ultralytics-v8-4-18/1834 "2026-02-27T13:26:33Z")\
**Posts on this page:** 1\
**Page:** 1

<div class="post-metadata">

**Author:** ![glenn-jocher](https://sea1.discourse-cdn.com/flex001/user_avatar/community.ultralytics.com/glenn-jocher/32/83_2.png) [@glenn-jocher](https://community.ultralytics.com/u/glenn-jocher)\
**Post date:** [February 27, 2026, 1:26pm UTC](https://community.ultralytics.com/t/new-release-ultralytics-v8-4-18/1834/1 "2026-02-27T13:26:33Z")

</div>

## Ultralytics v8.4.18 is out! 🛠🚀 (Reliability + ExecuTorch upgrades)

Ultralytics `v8.4.18` is a reliability-focused release that hardens downloads and dependency installs, and delivers a major **ExecuTorch export** refactor (now including smoother **Pose** support) for better edge/mobile deployment. 📱⚡

If you’re building with **Ultralytics YOLO** (especially YOLO26 for new projects), this update makes the tooling more robust and the export path cleaner.

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## 🌟 Highlights (what you’ll notice first)

### 🔧 Priority reliability fix: safer downloads

`safe_download()` now handles URLs containing spaces by encoding them as `%20`, preventing broken downloads from links like file paths or hosted assets with spaces. ✅

Implemented in PR [#23736](https://github.com/ultralytics/ultralytics/pull/23736) by [@glenn-jocher](https://github.com/glenn-jocher).

### 📱 Major export upgrade: ExecuTorch refactor + Pose improvements

ExecuTorch export has been refactored into a first-class shared utility module:

- New `ultralytics/utils/export/executorch.py` with reusable `torch2executorch()` and `executorch_wrapper()`
- Export pipeline now uses the shared utility (cleaner + easier to maintain)
- Added a Pose-safe decoding patch for better XNNPACK compatibility
- Benchmarks no longer block Pose + ExecuTorch inference
- Added a new reference docs page for ExecuTorch export

Merged via PR [#23734](https://github.com/ultralytics/ultralytics/pull/23734) by [@lakshanthad](https://github.com/lakshanthad).

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## 📦 Improvements

### 🧩 Dependency handling: `git+` requirements with version constraints

Fixes invalid install behavior by cleaning git URL requirement strings before install—less setup friction in custom environments. 🧰

PR [#23737](https://github.com/ultralytics/ultralytics/pull/23737) by [@fcakyon](https://github.com/fcakyon).

### 📒 Notebook/API modernization

The object tracking notebook was updated from deprecated `Annotator.seg_bbox()` to the modern plotting API `Results.plot(color_mode="instance")` for better forward compatibility. 🎥

PR [#23745](https://github.com/ultralytics/ultralytics/pull/23745) by [@ahmet-f-gumustas](https://github.com/ahmet-f-gumustas).

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## 📚 Docs updates

- OBB docs now reference a newer YOLO26 tutorial video (PR [#23738](https://github.com/ultralytics/ultralytics/pull/23738) by [@RizwanMunawar](https://github.com/RizwanMunawar))
- Vercel Web Analytics added to the docs template to help the team prioritize what users need most (PR [#23746](https://github.com/ultralytics/ultralytics/pull/23746) by [@glenn-jocher](https://github.com/glenn-jocher))

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## ✅ How to update

```bash
pip install -U ultralytics

```

Then try your usual `train`, `predict`, or `export` workflows—especially if you’re exporting to ExecuTorch for mobile/embedded deployment.

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## 🔗 Release links

You can review the full release details in the [Ultralytics v8.4.18 GitHub release](https://github.com/ultralytics/ultralytics/releases/tag/v8.4.18), or browse the [v8.4.17 → v8.4.18 full changelog diff](https://github.com/ultralytics/ultralytics/compare/v8.4.17...v8.4.18) for everything merged.

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## 💬 Feedback welcome

If you hit any download edge-cases, dependency install quirks, or ExecuTorch/Pose export issues, please reply with your command + logs (and device details for edge deployments). Your feedback helps keep Ultralytics YOLO rock-solid for everyone. 🙌