# Argo Workflows: what changed from 3 to 4

- Product: Argo Workflows (https://whatsnew.fyi/product/argo-workflows)
- Vendor: Argo Project
- Range: changelog entries numbered after v3.7.18 up to and including v4.1.2, stable releases only
- Entries below: 9 releases (newest first)
- Resolved: 3 is v3.7.18 and 4 is v4.1.2, the newest stable release of each major we track
- Carrying security changes: 0 · CVEs mentioned: 0 · Mentioning breaking changes: 9 · Removing or deprecating something: 0
- Page: https://whatsnew.fyi/product/argo-workflows/compare/3...4

What's New is an index, not a publisher: every entry below links to the vendor's own release notes, which are the authoritative source. Entries are labelled where they are hand-curated sample data, pre-releases, or drawn from a secondary source such as a developer blog.

Reuse: the summaries, labels and curation here are © What's New. Quote freely with attribution and a link back; wholesale republication of the corpus is not permitted — terms: https://whatsnew.fyi/terms. The vendors' own release notes remain their publishers'.

## What changed (0 changes, grouped by kind)

_No categorized changes yet; the release notes below are all there is._

_9 releases carry no categorized changes yet: v4.1.2, v4.0.10, v4.1.1, v4.0.9, v4.1.0, v4.0.8, v4.0.7, v4.0.6, v4.0.5._

## Release notes

### v4.1.2

- Date: 2026-08-21
- Version: v4.1.2
- Original notes: https://github.com/argoproj/argo-workflows/releases/tag/v4.1.2
- Permalink: https://whatsnew.fyi/product/argo-workflows/releases/v4.1.2

#### Quick Start

##### What's New?

Find out on [our blog](https://blog.argoproj.io) and [changelog](https://github.com/argoproj/argo-workflows/blob/main/CHANGELOG.md).

##### Breaking Changes and Known Issues

Check the [upgrading guide](https://argo-workflows.readthedocs.io/en/latest/upgrading/) and search for [existing issues on GitHub](https://github.com/argoproj/argo-workflows/issues).

##### Installation

###### CLI

###### Mac / Linux

Available via `curl`

```bash
#### Detect OS
ARGO_OS="darwin"
if [[ "$(uname -s)" != "Darwin" ]]; then
  ARGO_OS="linux"
fi

#### Download the binary
curl -sLO "https://github.com/argoproj/argo-workflows/releases/download/v4.1.2/argo-$ARGO_OS-amd64.gz"

#### Unzip
gunzip "argo-$ARGO_OS-amd64.gz"

#### Make binary executable
chmod +x "argo-$ARGO_OS-amd64"

#### Move binary to path
mv "./argo-$ARGO_OS-amd64" /usr/local/bin/argo

#### Test installation
argo version
```

###### Controller and Server

```bash
kubectl create namespace argo
kubectl apply -n argo -f https://github.com/argoproj/argo-workflows/releases/download/v4.1.2/install.yaml
```

### v4.0.10

- Date: 2026-08-21
- Version: v4.0.10
- Original notes: https://github.com/argoproj/argo-workflows/releases/tag/v4.0.10
- Permalink: https://whatsnew.fyi/product/argo-workflows/releases/v4.0.10

#### Quick Start

##### What's New?

Find out on [our blog](https://blog.argoproj.io) and [changelog](https://github.com/argoproj/argo-workflows/blob/main/CHANGELOG.md).

##### Breaking Changes and Known Issues

Check the [upgrading guide](https://argo-workflows.readthedocs.io/en/latest/upgrading/) and search for [existing issues on GitHub](https://github.com/argoproj/argo-workflows/issues).

##### Installation

###### CLI

###### Mac / Linux

Available via `curl`

```bash
#### Detect OS
ARGO_OS="darwin"
if [[ "$(uname -s)" != "Darwin" ]]; then
  ARGO_OS="linux"
fi

#### Download the binary
curl -sLO "https://github.com/argoproj/argo-workflows/releases/download/v4.0.10/argo-$ARGO_OS-amd64.gz"

#### Unzip
gunzip "argo-$ARGO_OS-amd64.gz"

#### Make binary executable
chmod +x "argo-$ARGO_OS-amd64"

#### Move binary to path
mv "./argo-$ARGO_OS-amd64" /usr/local/bin/argo

#### Test installation
argo version
```

###### Controller and Server

```bash
kubectl create namespace argo
kubectl apply -n argo -f https://github.com/argoproj/argo-workflows/releases/download/v4.0.10/install.yaml
```

### v4.1.1

- Date: 2026-08-14
- Version: v4.1.1
- Original notes: https://github.com/argoproj/argo-workflows/releases/tag/v4.1.1
- Permalink: https://whatsnew.fyi/product/argo-workflows/releases/v4.1.1

#### Quick Start

##### What's New?

Find out on [our blog](https://blog.argoproj.io) and [changelog](https://github.com/argoproj/argo-workflows/blob/main/CHANGELOG.md).

##### Breaking Changes and Known Issues

Check the [upgrading guide](https://argo-workflows.readthedocs.io/en/latest/upgrading/) and search for [existing issues on GitHub](https://github.com/argoproj/argo-workflows/issues).

##### Installation

###### CLI

###### Mac / Linux

Available via `curl`

```bash
#### Detect OS
ARGO_OS="darwin"
if [[ "$(uname -s)" != "Darwin" ]]; then
  ARGO_OS="linux"
fi

#### Download the binary
curl -sLO "https://github.com/argoproj/argo-workflows/releases/download/v4.1.1/argo-$ARGO_OS-amd64.gz"

#### Unzip
gunzip "argo-$ARGO_OS-amd64.gz"

#### Make binary executable
chmod +x "argo-$ARGO_OS-amd64"

#### Move binary to path
mv "./argo-$ARGO_OS-amd64" /usr/local/bin/argo

#### Test installation
argo version
```

###### Controller and Server

```bash
kubectl create namespace argo
kubectl apply -n argo -f https://github.com/argoproj/argo-workflows/releases/download/v4.1.1/install.yaml
```

### v4.0.9

- Date: 2026-08-14
- Version: v4.0.9
- Original notes: https://github.com/argoproj/argo-workflows/releases/tag/v4.0.9
- Permalink: https://whatsnew.fyi/product/argo-workflows/releases/v4.0.9

#### Quick Start

##### What's New?

Find out on [our blog](https://blog.argoproj.io) and [changelog](https://github.com/argoproj/argo-workflows/blob/main/CHANGELOG.md).

##### Breaking Changes and Known Issues

Check the [upgrading guide](https://argo-workflows.readthedocs.io/en/latest/upgrading/) and search for [existing issues on GitHub](https://github.com/argoproj/argo-workflows/issues).

##### Installation

###### CLI

###### Mac / Linux

Available via `curl`

```bash
#### Detect OS
ARGO_OS="darwin"
if [[ "$(uname -s)" != "Darwin" ]]; then
  ARGO_OS="linux"
fi

#### Download the binary
curl -sLO "https://github.com/argoproj/argo-workflows/releases/download/v4.0.9/argo-$ARGO_OS-amd64.gz"

#### Unzip
gunzip "argo-$ARGO_OS-amd64.gz"

#### Make binary executable
chmod +x "argo-$ARGO_OS-amd64"

#### Move binary to path
mv "./argo-$ARGO_OS-amd64" /usr/local/bin/argo

#### Test installation
argo version
```

###### Controller and Server

```bash
kubectl create namespace argo
kubectl apply -n argo -f https://github.com/argoproj/argo-workflows/releases/download/v4.0.9/install.yaml
```

### v4.1.0 — 4.1.0

- Date: 2026-08-11
- Version: v4.1.0
- Original notes: https://github.com/argoproj/argo-workflows/releases/tag/v4.1.0
- Permalink: https://whatsnew.fyi/product/argo-workflows/releases/v4.1.0

#### Quick Start

##### What's New?

Find out on [our blog](https://blog.argoproj.io) and [changelog](https://github.com/argoproj/argo-workflows/blob/main/CHANGELOG.md).

##### Breaking Changes and Known Issues

Check the [upgrading guide](https://argo-workflows.readthedocs.io/en/latest/upgrading/) and search for [existing issues on GitHub](https://github.com/argoproj/argo-workflows/issues).

##### Installation

###### CLI

###### Mac / Linux

Available via `curl`

```bash
#### Detect OS
ARGO_OS="darwin"
if [[ "$(uname -s)" != "Darwin" ]]; then
  ARGO_OS="linux"
fi

#### Download the binary
curl -sLO "https://github.com/argoproj/argo-workflows/releases/download/v4.1.0/argo-$ARGO_OS-amd64.gz"

#### Unzip
gunzip "argo-$ARGO_OS-amd64.gz"

#### Make binary executable
chmod +x "argo-$ARGO_OS-amd64"

#### Move binary to path
mv "./argo-$ARGO_OS-amd64" /usr/local/bin/argo

#### Test installation
argo version
```

###### Controller and Server

```bash
kubectl create namespace argo
kubectl apply -n argo -f https://github.com/argoproj/argo-workflows/releases/download/v4.1.0/install.yaml
```

### v4.0.8

- Date: 2026-07-22
- Version: v4.0.8
- Original notes: https://github.com/argoproj/argo-workflows/releases/tag/v4.0.8
- Permalink: https://whatsnew.fyi/product/argo-workflows/releases/v4.0.8

#### Quick Start

##### What's New?

Find out on [our blog](https://blog.argoproj.io) and [changelog](https://github.com/argoproj/argo-workflows/blob/main/CHANGELOG.md).

##### Breaking Changes and Known Issues

Check the [upgrading guide](https://argo-workflows.readthedocs.io/en/latest/upgrading/) and search for [existing issues on GitHub](https://github.com/argoproj/argo-workflows/issues).

##### Installation

###### CLI

###### Mac / Linux

Available via `curl`

```bash
#### Detect OS
ARGO_OS="darwin"
if [[ "$(uname -s)" != "Darwin" ]]; then
  ARGO_OS="linux"
fi

#### Download the binary
curl -sLO "https://github.com/argoproj/argo-workflows/releases/download/v4.0.8/argo-$ARGO_OS-amd64.gz"

#### Unzip
gunzip "argo-$ARGO_OS-amd64.gz"

#### Make binary executable
chmod +x "argo-$ARGO_OS-amd64"

#### Move binary to path
mv "./argo-$ARGO_OS-amd64" /usr/local/bin/argo

#### Test installation
argo version
```

###### Controller and Server

```bash
kubectl create namespace argo
kubectl apply -n argo -f https://github.com/argoproj/argo-workflows/releases/download/v4.0.8/install.yaml
```

### v4.0.7

- Date: 2026-07-07
- Version: v4.0.7
- Original notes: https://github.com/argoproj/argo-workflows/releases/tag/v4.0.7
- Permalink: https://whatsnew.fyi/product/argo-workflows/releases/v4.0.7

#### Quick Start

##### What's New?

Find out on [our blog](https://blog.argoproj.io) and [changelog](https://github.com/argoproj/argo-workflows/blob/main/CHANGELOG.md).

##### Breaking Changes and Known Issues

Check the [upgrading guide](https://argo-workflows.readthedocs.io/en/latest/upgrading/) and search for [existing issues on GitHub](https://github.com/argoproj/argo-workflows/issues).

##### Installation

###### CLI

###### Mac / Linux

Available via `curl`

```bash
#### Detect OS
ARGO_OS="darwin"
if [[ "$(uname -s)" != "Darwin" ]]; then
  ARGO_OS="linux"
fi

#### Download the binary
curl -sLO "https://github.com/argoproj/argo-workflows/releases/download/v4.0.7/argo-$ARGO_OS-amd64.gz"

#### Unzip
gunzip "argo-$ARGO_OS-amd64.gz"

#### Make binary executable
chmod +x "argo-$ARGO_OS-amd64"

#### Move binary to path
mv "./argo-$ARGO_OS-amd64" /usr/local/bin/argo

#### Test installation
argo version
```

###### Controller and Server

```bash
kubectl create namespace argo
kubectl apply -n argo -f https://github.com/argoproj/argo-workflows/releases/download/v4.0.7/install.yaml
```

### v4.0.6

- Date: 2026-06-10
- Version: v4.0.6
- Original notes: https://github.com/argoproj/argo-workflows/releases/tag/v4.0.6
- Permalink: https://whatsnew.fyi/product/argo-workflows/releases/v4.0.6

#### Quick Start

##### What's New?

Find out on [our blog](https://blog.argoproj.io) and [changelog](https://github.com/argoproj/argo-workflows/blob/main/CHANGELOG.md).

##### Breaking Changes and Known Issues

Check the [upgrading guide](https://argo-workflows.readthedocs.io/en/latest/upgrading/) and search for [existing issues on GitHub](https://github.com/argoproj/argo-workflows/issues).

##### Installation

###### CLI

###### Mac / Linux

Available via `curl`

```bash
#### Detect OS
ARGO_OS="darwin"
if [[ "$(uname -s)" != "Darwin" ]]; then
  ARGO_OS="linux"
fi

#### Download the binary
curl -sLO "https://github.com/argoproj/argo-workflows/releases/download/v4.0.6/argo-$ARGO_OS-amd64.gz"

#### Unzip
gunzip "argo-$ARGO_OS-amd64.gz"

#### Make binary executable
chmod +x "argo-$ARGO_OS-amd64"

#### Move binary to path
mv "./argo-$ARGO_OS-amd64" /usr/local/bin/argo

#### Test installation
argo version
```

###### Controller and Server

```bash
kubectl create namespace argo
kubectl apply -n argo -f https://github.com/argoproj/argo-workflows/releases/download/v4.0.6/install.yaml
```

### v4.0.5

- Date: 2026-04-23
- Version: v4.0.5
- Original notes: https://github.com/argoproj/argo-workflows/releases/tag/v4.0.5
- Permalink: https://whatsnew.fyi/product/argo-workflows/releases/v4.0.5

#### Quick Start

##### What's New?

Find out on [our blog](https://blog.argoproj.io) and [changelog](https://github.com/argoproj/argo-workflows/blob/main/CHANGELOG.md).

##### Breaking Changes and Known Issues

Check the [upgrading guide](https://argo-workflows.readthedocs.io/en/latest/upgrading/) and search for [existing issues on GitHub](https://github.com/argoproj/argo-workflows/issues).

##### Installation

###### CLI

###### Mac / Linux

Available via `curl`

```bash
#### Detect OS
ARGO_OS="darwin"
if [[ "$(uname -s)" != "Darwin" ]]; then
  ARGO_OS="linux"
fi

#### Download the binary
curl -sLO "https://github.com/argoproj/argo-workflows/releases/download/v4.0.5/argo-$ARGO_OS-amd64.gz"

#### Unzip
gunzip "argo-$ARGO_OS-amd64.gz"

#### Make binary executable
chmod +x "argo-$ARGO_OS-amd64"

#### Move binary to path
mv "./argo-$ARGO_OS-amd64" /usr/local/bin/argo

#### Test installation
argo version
```

###### Controller and Server

```bash
kubectl create namespace argo
kubectl apply -n argo -f https://github.com/argoproj/argo-workflows/releases/download/v4.0.5/install.yaml
```