What Heroku shipped in March 2026

IaaS vs. PaaS vs. SaaS: What Are the Differences?

This article explains the differences between Infrastructure as a Service (IaaS), Platform as a Service (PaaS), and Software as a Service (SaaS), emphasizing how each model balances control, convenien…

118. Why Writing Matters for Engineers

The podcast episode titled *Why Writing Matters for Engineers* from Salesforce’s *Codeish* series explores the critical role of communication, particularly writing, in technical roles. The discussion …

Ruby version 3.2.11 is now available

Heroku has introduced Ruby v3.2.11 as a new runtime option for applications hosted on its platform. Developers can now specify this Ruby version in their Gemfile using a dedicated directive to leverag…

Ruby version 3.3.11 is now available

Heroku has introduced support for Ruby v3.3.11, enabling developers to run applications using this latest version. The update requires users to add a Ruby directive to their Gemfile to specify the ver…

Node.js 25.8.2, 24.14.1, 22.22.2, and 20.20.2 now available

Heroku has released updated versions of Node.js (25.8.2, 24.14.1, 22.22.2, and 20.20.2) for its build environment. These updates provide developers with access to the latest stable releases of Node.js…

Heroku-22 and Heroku-24 stacks updated

Heroku has updated its heroku-22 and heroku-24 stacks to include security fixes from upstream packages. The new base images are rolling out automatically to the Common Runtime within 48 hours, followe…

Heroku March 2026 Update

Heroku has shifted to a Sustaining Engineering model to prioritize stability, security, and reliability for its platform and customer applications. This strategic move aims to ensure a more robust and…

Modernizing the Command Line: Heroku CLI v11

Heroku has released CLI v11, marking its most significant architectural overhaul in years by transitioning to ECMAScript Modules (ESM) and adopting oclif v4. This modernization delivers faster perform…

Bigger Slugs and Greater Build Timeout Flexibility

Heroku has increased the default maximum compressed slug size from 500MB to 1GB to accommodate growing application demands, particularly for AI and data-heavy libraries. This change reduces deployment…

Jesse Brown

Heroku has increased the default maximum compressed slug size for its platform from 500MB to 1GB to better support modern application stacks, particularly those using AI and data-heavy libraries. This…

Keshav Pokkuluri

Heroku has shifted to a Sustaining Engineering model to prioritize stability, security, and reliability for its customers. This strategic change aims to provide a more robust and efficient platform by…

Ed Morley

Heroku has increased the default maximum compressed slug size from 500MB to 1GB to better support modern applications, particularly those using AI and data-heavy libraries. This change reduces deploym…

Heroku CLI v11.0.0 now available

Heroku has released a major update to its CLI tool, upgrading it to version 11.0.0. This release modernizes the CLI by migrating to Node.js 22, converting the entire codebase to ECMAScript Modules (ES…

Data Maintenance CLI commands are now in Heroku CLI

Heroku has integrated Data Maintenance CLI commands directly into the base Heroku CLI, eliminating the need for a separate plugin to manage maintenance events for Heroku Postgres, Heroku Key-Value Sto…

OpenJDK 26 is now available for Java, Scala and Clojure apps

Heroku has expanded its support for Java, Scala, and Clojure by adding compatibility with OpenJDK version 26. This update allows developers to leverage the latest OpenJDK release for their application…

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The content describes 'pack,' a CLI tool designed to simplify the process of building applications using Cloud Native Buildpacks. It serves as an implementation of the Platform Interface Specification…

Behind the Scenes: How Maintaining Cloud Native Buildpacks Powers Platforms Like Heroku

Heroku’s maintainers of the Cloud Native Buildpacks (CNB) ecosystem have shipped 27 releases over 14 months, including 11 for pack CLI and 16 for buildpacks, alongside major features like Execution En…

Ecosystem

Heroku has announced several updates to enhance its platform and ecosystem, with the most significant being the General Availability (GA) of the Heroku GitHub Enterprise Server Integration. This new i…

Engineering

Heroku’s engineering blog highlights several technical updates and enhancements that improve platform performance, security, and developer experience. Key changes include the release of 11 cloud-nativ…

PHP updates - March 2026

Heroku has released updates to its PHP runtime environment, including new PHP versions, updated PHP extensions, and new Composer versions available for builds. The Nginx web server has been upgraded t…

Ruby version 4.0.2 is now available

Heroku has released Ruby v4.0.2 as the latest available version for its platform. Developers must update their Gemfile with a Ruby directive to run applications using this version. The update provides…

Python buildpacks updated to uv 0.10.9

Heroku has updated its Python buildpacks to use the uv package manager from releases.astral.sh instead of GitHub Releases, aiming to improve reliability during the build process for Python application…

From Fragmented Logs to Full-Stack Visibility with SolarWinds Papertrail

Heroku and SolarWinds Papertrail have expanded their add-on to provide a unified solution for logs and metrics, addressing the fragmentation in monitoring and troubleshooting. This consolidation elimi…

Heroku Managed Inference and AgentsHeroku AI provides access to to top models and built-in tools for agents.

Heroku has introduced Managed Inference and Agents, a service that simplifies AI integration by providing access to powerful foundation models, including text, embedding, and diffusion models. This se…

Preparing for Shorter SSL/TLS Certificate Lifetimes

The CA/Browser Forum is reducing the maximum validity period for publicly trusted SSL/TLS certificates to 200 days starting March 15, 2026, with a goal of 47 days by 2029. This change aims to improve …

Heroku SchedulerRun scheduled tasks every 10 minutes, every hour, or every day.Starting at ~$0/hour.

Heroku Scheduler is an add-on that allows users to run scheduled tasks on their applications at specified intervals, similar to cron jobs in traditional server environments. It supports various time i…

CGM Remote Monitor

The Nightscout Web Monitor, also known as CGM Remote Monitor, is a web-based tool that allows multiple caregivers to remotely view a patient's glucose data in real time. The system reads data from a M…

OWASP Juice Shop

OWASP Juice Shop is an intentionally insecure web application designed for security training, demos, CTFs, and tool testing. It includes vulnerabilities from the OWASP Top Ten and other real-world sec…

Start on Heroku: Node.js

The content provides instructions for deploying a barebones Node.js app using Express on the Heroku platform. It supports tutorials for both the Cedar and Fir generations of Heroku. The app can be run…

Nightscout LibreLinkUp Uploader

The Nightscout LibreLinkUp Uploader is a TypeScript script designed to upload continuous glucose monitor (CGM) readings from LibreLink Up to Nightscout. It supports at least Freestyle Libre 2 and Libr…

doccano

Doccano is an open-source text annotation tool designed for humans to create labeled data for various tasks such as text classification, sequence labeling, and sequence to sequence tasks. It supports …

Strapi

Strapi has created a template for deploying Strapi applications on Heroku with a one-click deploy button. This template uses PostgreSQL for the database and Cloudinary for asset uploads, with configur…

React Sample Applications for O

The content provides a guide on setting up and deploying React sample applications that integrate with Okta for authentication. It details the steps to create an Okta Developer account, register an ap…