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    29 May 2023 · Semaphore News

    Semaphore Classic Deprecation – How to prepare

    4 min read

    Semaphore Classic has been an integral part of our platform since 2012, and we appreciate the support and feedback we have received from our customers over the years. However, we are excited to announce that Semaphore Classic will be discontinued by September 30, 2023.

    We understand that change can be daunting, and we are committed to making the transition as seamless as possible for you. Our Migration Guide will provide you with all the necessary information you need to get started, and our support team will remain available to assist you. If you have any questions or concerns, please do not hesitate to reach out to us at

    Why is Semaphore Classic being deprecated?

    Over the past four years, the Semaphore team has invested in building an improved version of our CI/CD platform for our customers. Semaphore 2 is the culmination of that effort, offering new and improved features that significantly expand on what Semaphore Classic provides.

    Based on continuous positive customer feedback for Semaphore 2, we have made the decision to focus on providing support for a single version of Semaphore.

    Semaphore Classic Deprecation Timeline

    To minimize disruption, we will be holding brownouts during September. The table below provides more information about these important events.

    DateWhat will happen
    September 4 – 10, 2023First Brownout Week

    Semaphore Classic will not start jobs for 15 minutes at a time for the given periods:

    UTC 00:00 — 00:15
    UTC 10:00 — 10:15
    UTC 15:00 — 15:15 
    September 11 – 17, 2023Second Brownout Week

    Semaphore Classic will not start jobs for 30 at a time minutes for the given periods:

    UTC 00:00 — 00:30
    UTC 10:00 — 10:30
    UTC 15:00 — 15:30 
    September 18 – 24, 2023Third Brownout Week

    Semaphore Classic will not start jobs for 1 hour at a time for the given periods:

    UTC 00:00 — 01:00
    UTC 10:00 — 11:00
    UTC 15:00 — 16:00 
    September 25 – 30, 2023Fourth Brownout Week

    Semaphore Classic will not start jobs for 3 hours at a time for the given periods:

    UTC 00:00 — 01:00
    UTC 10:00 — 11:00
    UTC 15:00 — 16:00 
    September 30, 2023Semaphore Classic end of life

    The product will be permanently discontinued.

    Does the Semaphore Classic Deprecation Affect me?

    If you have an organization with active projects on, the deprecation will impact you. Please continue reading for more information on how to migrate your projects while maintaining the same pricing plan you currently have. We will guide you through all the key points.

    If you are using the Ubuntu 18.04 platform, you are already halfway there. This image selects languages and starts services in the same way as you would in Semaphore 2.

    The migration process is a bit more involved if you are using one of the Ubuntu 14.04 platforms, which is why we have created the Semaphore Classic Migration Guide.

    However, if the guide doesn’t address your specific use case, don’t worry! We’ve got your back. Please reach out to our support team at, and we’ll do our best to assist you in migrating your projects.

    What about my current pricing plan?

    If you would like to take advantage of all the new features Semaphore has to offer, you can choose to move to a new pricing plan. Alternatively, if you prefer to keep your current pricing plan, we’ll match it when you create your new organization in Semaphore 2

    Simply send us a message at, and we’ll take care of the details.

    Benefits of Migrating to Semaphore 2

    Semaphore 2 awaits you, a more modern and powerful platform that surpasses and exceeds what you could achieve in Semaphore Classic:

    Semaphore 2 Visual Workflow Editor.
    Model your pipelines using Visual Workflow Editor in Semaphore 2.

    This is just a glimpse of the many new features you can benefit from in Semaphore 2. Furthermore, with Semaphore 2, you will have access to a platform that is continuously evolving to meet your needs.

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    Avatar for Bostjan Cigan
    Writen by:
    A senior engineer turned developer evangelist with a history of working with startups and enterprises (Povio, Sportradar, Automattic, Qloo, Presearch), solving engineering challenges, leading and growing teams and a passion for community building and knowledge sharing (Thinkful, Smart Ninja). Connect with me!