CircleCI Release notes and new features

Server

CircleCI Server 4.10.2 includes security updates to reject compromised certificates and adds new Kong routes for the OAuth authorization server.

• Server Release 4.10.2
• Server Release 4.9.7

GitHub check re-runs now run as the user who clicked Re-run

CircleCI now attributes workflow re-runs triggered from GitHub checks to the user who initiated the re-run, rather than the original workflow starter.

• GitHub check re-runs now run as the user who clicked Re-run
• Improved GitHub check-run summaries for on-hold workflows

Manage a project’s Slack notifications from the CLI

CircleCI CLI v1.11.0 adds commands to manage Slack notifications, allowing developers to script Slack channel configuration across projects.

• Manage a project’s Slack notifications from the CLI
• Xcode 27.2 RC 1 Available

OIDC tokens: new V3 token format with config source and ref claims

CircleCI now issues a third version of its OIDC (OpenID Connect) token, alongside the V1 and V2 tokens. In V3 the subject ( sub ) claim covers where the code was checked out from and where the pipeline config came from. What’s new Jobs now get the V3 token in $CIRCLE_OIDC_TOKEN_V3 , alongside $CIRCLE_OIDC_TOKEN and $CIRCLE_OIDC_TOKEN_V2 .

• Runner Release 3.1.14
• OIDC tokens: new V3 token format with config source and ref claims
• Machine Runner Orchestrator Release 1.0.2

Dynamic Parallelism for Smarter Testing

Instead of always starting with full parallelism as set in the config, Dynamic Parallelism can scale the number of parallel nodes your test job needs depending on the number of tests that were selected by Smarter Testing’s Intelligent Test Selection.

• Dynamic Parallelism for Smarter Testing
• Scoped API tokens

Additional AWS fallback regions for machine executor and remote Docker

We are adding two AWS compute regions, us-west-1 and us-west-2 . They join us-east-2 as fallback regions. CircleCI uses a fallback region when capacity is not available in the primary region. This change improves availability. What is affected Machine executor jobs and remote Docker can run in a fallback region.

The CircleCI plugin for JetBrains IDEs: watch, debug and manage your runs without leaving the IDE

The CircleCI plugin for JetBrains IDEs is now available on the JetBrains Marketplace . It brings your CircleCI runs, jobs and config into IntelliJ IDEA and the other JetBrains IDEs, so you can see what CI is doing and act on it without switching to the browser.

Teardown now available for run steps

For customers needing cleanup work to run no matter how a job ends, we now support teardown steps. Add a teardown list to any run step, and CircleCI runs those steps at the end of the job, including when the job fails, is canceled, or times out.

CircleCI API v3 is now available

API v3 is CircleCI’s current API version, and all new API development happens in v3. Every endpoint follows the same conventions, so you can predict how the API works without reading a spec for each one: UUID resource IDs instead of project slugs Cursor-based pagination One error format with structured error objects Standard rate limit headers, so tools can...

Smart Deployments: continuous release validation with automatic rollback

Smart Deployments is now available. It gates each release on signals from your monitoring tools and rolls back automatically when a release fails validation. No Kubernetes, Argo Rollouts, or CircleCI release agent required.

Smarter Testing CLI: New commands, flags, and plugin registry

We’ve consolidated the Smarter Testing CLI experience under the CircleCI CLI. Please apply these changes by September 14, 2026. Local Installation Note: these steps apply to your local machine only. CI containers already have the CLI installed, so no install step is needed in your config. The testsuite is now managed as a CircleCI CLI extension.

• Runner Release 3.1.12
• Smarter Testing CLI: New commands, flags, and plugin registry

IP ranges support available for Gen2 Docker (x86)

IP ranges is now supported for x86 Docker Gen2 resources classes. Pricing for IP ranges is unchanged and is the same across all executor generations: 450 credits per 1 GB of data used, for customers on a Performance or Scale plan, billed in addition to standard compute costs. See the x86 (gen2) Docker documentation and IP ranges documentation for details.

• IP ranges support available for Gen2 Docker (x86)
• Scale plan: Unlimited job concurrency

Email notifications for expiring personal API tokens

CircleCI now emails you before a personal API token expires, so you can rotate it before any scripts, pipelines, or integrations that use it start failing. You receive an email at four points ahead of the expiry date: 30 days before 15 days before 7 days before 1 day before Emails go to your default email address.

OAuth 2.0 API Access with Dynamic Client Registration

CircleCI APIs now support OAuth 2.0 authorization code flow with Dynamic Client Registration (DCR). Tools and integrations can now authenticate to CircleCI APIs using standard OAuth 2.0 , no manually issued client secrets required.

• Copy Fix Prompt, diagnose and fix failures with any AI coding agent
• Fix with Claude Code now available from more places in the CircleCI UI
• OAuth 2.0 API Access with Dynamic Client Registration

Server

Updates The NGINX default image has been updated to version 1.30.1, which addresses security vulnerabilities present in version 1.30.0 that were not resolved until after its release. No action is required unless you have pinned the NGINX image tag in your deployment.

• Server Release 4.10.1
• Server Release 4.9.6

Fix failing workflows with Claude Code from the CircleCI UI

You can now triage and fix failing workflows using Claude Code directly from the CircleCI UI. Navigate to a pipeline run, click the wrench icon on a failing workflow, and select Fix with Claude Code .

New CLI flag: circleci run get --failure-report

You can now generate a condensed failure report for any pipeline run using circleci run get --failure-report . The report prints output for every failed step, formatted for AI agent consumption. Pipe it to your local coding agent to diagnose and fix failing builds . By default, the CLI retrieves the latest run from your current git remote and branch.

Get Slack DMs for workflows you trigger

Link your Slack identity to CircleCI and get notified on builds you triggered in your Slack DMs , no more tab-hopping to check your build’s status. You can set different status filters for Slack vs. email directly from your user settings page To enable it: Make sure your organization has the CircleCI Slack app installed (Org > Slack Integration).

Runner Release 3.1.11

Machine Runner: Machine runner now passes CircleCI’s built-in environment variables through to command_prefix wrapper scripts, so a wrapper can read job details such as the build number and branch. Container Runner: Fixed garbage collection so that when one agent replica dies, the surviving replicas clean up the task pods it left behind.

Code signing for iOS and macOS managed by API

You can now manage code signing for iOS and macOS builds through the CircleCI API. Upload your Apple signing certificate ( .p12 ) and provisioning profiles, create a signing bundle, then reference it by name in your macos executor using the new code_signing key and the install_signing_bundle step.

• Code signing for iOS and macOS managed by API
• Server Release 4.9.5

Get notified in Slack or email when a workflow needs approval

You can now get notified by Slack or email when a workflow is paused on an approval job. Each notification includes a link that takes you straight to the approval job in CircleCI, where you can approve or cancel it.

UPDATE: EOL notice for some pipeline values starting with pipeline.trigger_parameters.*

UPDATE: Effective September 21, 2026 , support for all pipeline values starting with pipeline.trigger_parameters.circleci.* and pipeline.trigger_parameters.github_app.* will be discontinued. These values will no longer be guaranteed to be present in pipelines after this date. The previously communicated date for end of life was August 1, 2026.

Workflow cancellation display status reliability improvements

What changed We overhauled how CircleCI handles workflow cancellation to eliminate two long-standing issues: jobs that flip from canceled to success , and jobs that keep showing a spinner after they’ve actually finished.

The new Pipelines page is now live for all users

We’ve launched a new Pipelines page in the CircleCI web app, bringing faster page loads and additional filter controls to help you find and manage your pipelines more easily. Existing users will be switched to the new design automatically. If you’d like to switch back to the previous version, toggle off “Updated view” in the top right of the Pipelines page.

• Xcode 26.6 Available
• The new Pipelines page is now live for all users

Xcode 26.6 RC 2 Available

The Xcode 26.6 RC 2 image is now available to be used in CircleCI pipelines. The full manifest of installed software can be found here .

Easy way to validate config against upcoming breaking changes

We now have a consistent way to validate if your config is impacted by any of the upcoming breaking changes before they take effect on September 21, 2026. CLI: Run circleci config validate --next Config editor: Enable the “config next” toggle in your config editor For more info on how to utilize the config editor or the new CLI flag, see the Discuss post .