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Platform Updates

Heroku March 2026 Update

We’ve transitioned to a Sustaining Engineering model to better serve the customers who rely on us every day. Our mission is simple: to provide the most stable, secure, and reliable environment for your apps and data. We will continue releasing features and functionality that align with our Sustaining Engineering goals and provide a more robust and efficient platform to our customers.

Today we are excited to share three recent enhancements:

Bigger Slugs and Greater Build Timeout Flexibility

Modern applications, especially those leveraging AI and data-heavy libraries, need more room to breathe. To support these evolving stacks and reduce developer friction, we’ve increased the default maximum compressed slug size from 500MB to 1GB.

Discover How Heroku’s AI PaaS Delivers Real-World Results at Dreamforce

The AI revolution presents a critical challenge: moving from experimentation to production. This year, Heroku has evolved beyond a traditional PaaS to become an AI PaaS, a fully managed platform designed to solve this problem and accelerate the delivery of AI-powered apps. With new capabilities like AppLink, Managed Inference and Agents, and MCP on Heroku, Heroku now provides a fully managed platform designed for the AI era.

This evolution accelerates the delivery of AI-powered apps and intelligent agents, bringing a new level of speed and simplicity to your development process. Dreamforce 2025 is your chance to see firsthand how the Heroku AI PaaS is delivering business value faster and with less complexity.

Introducing the Heroku AI Platform as a Service (AI PaaS)

Today, we are pleased to announce the evolution of Heroku to an AI Platform as a Service (AI PaaS). GenAI has changed how we build software (vibe coding), the kind of technology we use (Cursor, LLMs), the type of software we make (agents), and redefined what it means to be a developer in this new world.

In a recent Salesforce study, 84% of developers with AI say it helps their teams complete their projects …

Heroku Postgres 17 with the New Upgrade Process: Faster Performance, Easier Upgrade

We’re excited to announce the general availability of Heroku Postgres version 17, packed with new features and enhancements to your database performance. And that’s not all – we’re also introducing a game-changing feature that streamlines your upgrade experience. This new method of version upgrade is now the default, so you can try it to upgrade to Postgres 17!

Postgres 17: Powering your applications with enhanced performance and security

Before we dive into the …

Heroku Postgres Upgrade Guide: Simplify Your Move to Version 17

If you’ve ever deployed an app on Heroku, chances are you’ve used Heroku Postgres — our fully managed, reliable, and scalable Postgres database service. It’s the backbone for millions of applications, from weekend side projects to enterprise-grade systems running in production.

But Postgres, like all software, continues to evolve. With new versions released each year, you gain access to performance enhancements, critical security updates, and powerful new features. Keeping your database up to date isn’t …

Electron on Heroku

As maintainers of the open source framework Electron, we try to be diligent about the work we take on. Apps like Visual Studio Code, Slack, Notion, or 1Password are built on top of Electron and make use of our unique mix of native code and web technologies to make their users happy. That requires focus: There’s always more work to be done than we have time and resources for. In practice, that means that we don’t want to spend time thinking about the server infrastructure for the project‌ — ‌and we’re grateful for the support we receive from Heroku, where we can host load-intensive apps without worrying about managing the underlying infrastructure. In this blog post, we’ll take a look at some of the ways in which we use Heroku.

Evolving the Backend Storage for Platform Metrics

One of our most important goals at Heroku is to be boring. Don’t get us wrong, we certainly hope that you’re excited about the Heroku developer experience — as heavy users of Heroku ourselves, we certainly are! But, even more so, we hope that you don’t have to spend all that much time thinking about Heroku. We want you to be able to spend your time thinking about the awesome, mission-critical things you’re building with Heroku, rather than worrying about the security, reliability, or performance of the underlying infrastructure they run on.

2023: Delivering Innovation and Customer Success

2024 is going to be an exciting year at Heroku. Before we jump into 2024, let’s take a look back at 2023 and show you how we’re empowering developers to deliver amazing apps. First of all, we want to take a moment to thank you, our customers, partners, employees, and extended communities. Your passion for Heroku and the developer community makes our work possible.

Customer Success

Our teams continued to grow to meet the demands …

Heroku Private Spaces Global Expansion: Canada, India, Singapore, and the UK

In May 2023, we announced our limited release of two new Heroku Private Spaces regions: India (Mumbai) and Canada (Montreal). This month, we’re announcing the full general availability of those two regions, along with new Heroku Private Spaces regions for the United Kingdom (London) and Singapore. This expansion enables customers to maintain greater control over where their data is stored and processed. These four new regions fully support Heroku Private Spaces, Heroku Shield Private …

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