We're proud to announce that Moderne has been recognized as a Visionary in the Gartner® Magic Quadrant™ for Technical Debt Management Tools. Download the report to learn more:

#OpenRewrite v8.83 is out! 🚀 🟣 Native C# recipes 🎨 New Kotlin recipe DSL & recipes 🔴 Expanded Scala parser & recipes 🐍 Python 2.7 parser ☕ JDK 26 via rewrite-java-next 🌱 Spring Boot 4.1 migration 🚀 Micronaut 4 → 5 migration 🧪 JUnit 6.1 migration 🐻 Hibernate 7.0/7.1 github.com/openrewrite/...

OpenRewrite now has a Kotlin DSL for recipe authoring. Declare a before/after pattern, get a generated recipe at compile time. No annotations, no template class, no reflection. Migration, performance fusions, and Android deprecation patterns all ship on day one. Full breakdown:

Modernization without risk sounds like a myth. @timtebeek.github.io is here to prove otherwise. Catch his session today at @devoxx.uk: "Deterministic modernization in an age of AI" for a practical, real-world approach you can actually use. Room A | 14:40–15:30 Details: buff.ly/saEhbxJ

We've expanded Moderne’s Agent Tools platform to support C#, bringing deterministic, large-scale code transformation to .NET ecosystems. 🙌 Learn more and get started with C#: buff.ly/JmKPn9Y

Last Wednesday, we released the newest version of Timefold Solver, 2.0. It's a major version, which can look a bit scary. Upgraded 15 projects... time: under 10 minutes. 😊 Read about that experience here: timefold.ai/blog/timefol... Big thanks to Moderne for their work on #OpenRewrite. 😊

Good morning @jcon.one ! For the most dedicated audience there's a 9AM testing talk. 😅 See you there!

Heading to Spring I/O? 🍃 Block time for: Prepare Your Next Spring Boot Migration - a hands-on workshop with @timtebeek.github.io & @mboegie.dev. Upgrading one service is manageable. Doing it across hundreds is where plans fall apart. This workshop is built for that. buff.ly/zJiuKWe

#OpenRewrite v8.79 is out! 🧑‍🚀 🐍 Detect requirements.txt vulnerabilities 🔒 OWASP A05:2025 Injection recipes 🍃 Spring Data upgrade recipe 🐻‍❄️ Hibernate Criteria API → JPA 🌐 Netty 3.2.x → 4.1.x migration 🧪 Mockito, PowerMock & WireMock recipes 📝 StringUtils → JDK equivalents github.com/openrewrite/...

#OpenRewrite v8.77.0 is out! 🚀 🔷 C# pattern matching & typed captures 🍃 Spring RestTemplate → RestClient ☕ JAX-RS to Spring MVC 🔒 OWASP Cryptographic Failures 🧪 PowerMock & AssertThrows fixes 📋 CopyValue for YAML & .properties 🔧 Maven proxy settings from settings.xml 📑 JavaDoc to /// Markdown

#OpenRewrite v8.75.0 is out! 🚀 🐍 Python f-string template & pattern support 🌶 Lombok *ArgsConstructor recipes 🦊 GitLab CI/CD best practices recipes 📐 Angular 19 & 20 migrations 🟢 Node.js upgrade recipes 📝 SLF4J StringFormat & MessageFormat recipes github.com/openrewrite/...

#OpenRewrite v8.74.1 is out! 🚀 🤔 Prethink for Node.js ✅ Various AssertJ & Hamcrest fixes 🔧 Jackson 3 @JsonIgnore & IOException fixes 🟣 Kotlinx, Androidx, Jetpack Compose & Exposed recipes 🍃 MockMvc to AssertJ conversion ✈️ JBoss to Jetty migration 🐛 Spring Security fixes github.com/openrewrite/...

The "Break your testing habits" series continues tomorrow on Code Remix Weekly. 📚 In part 2, level up your Junit skills, including upgrading smoothly, applying modern best practices, and exploring powerful newer features in JUnit 5.14 & 6. 🔴 Watch live tomorrow ⤵️

AI sits to your right, but you're the captain - @vilojona.bsky.social: Practical ways to keep AI codegen under control - @vjovanov.bsky.social: Taming GraalVM with AI - @timtebeek.github.io: Deterministic modernization in the AI age - @kevindubois.com @cedricclyburn.com: Local development strategies

#OpenRewrite v8.73.0 is out! 🍰 🐍 Python 2 parser + Python 3 recipes 🐳 Docker parser + recipes 🍂 Propagate Maven parent POM changes 🧪 New AssertJ and Mockito recipes 🔌 Apache HttpAsyncClient 4→5 🏛️ Struts 1→2→5→6→7 recipes 🧙 Dropwizard 5.0 migration 🐛 Tons of fixes github.com/openrewrite/...

The first day of #jfokus, the hands-on day, so where you learn and end up tired. @timtebeek.github.io and @rickossendrijver.bsky.social presented "Break your testing habits", advocating #AssertJ, but also a scary eye-opener how much many of us still stick to obsolete habits we learned with #JUnit 3.

🚀 Ready to refactor at scale? Join @timtebeek.github.io at #Devnexus for a hands-on workshop on Migration Engineering with OpenRewrite — automate upgrades, boost security, and modernize your codebase with custom AI-powered recipes. devnexus.com/events/migra... 🎟️ Get tickets - devnexus.com

#OpenRewrite v8.72.0 is out! 🎟 🐍 Added Python parser 🍃 Spring Kafka 4 + Jackson 3 📜 Migrate to System.Logger 📐 JSF 2.3 & RichFaces 4 migration 💬 Varargs in JavaTemplate & Refaster 🅰️ Angular v20 & v21 upgrade recipes 🔓 EPSS vulnerability scoring 🐛 Many smaller fixes github.com/openrewrite/...

I was asked after the "Refactoring to #EclipseCollections" talk at dev2next 2025 whether there were any #OpenRewrite recipes for EC. My answer was "No, but it would be great if someone contributed some in OSS." Thx @cmotlin.bsky.social! 🙏 @zakhav.bsky.social @ted.dev github.com/liftwizard/l...

Join us for a practical, hands-on training to prep your codebase for your next Spring Boot migration.🥾 We’ll show you a staged, workflow-driven approach used by modern platform and application teams.💡 Sign up: buff.ly/ONxZvJA

#OpenRewrite v8.71.0 is out! 🎆 🌱 Spring Boot 4: expanded coverage ☁️ Spring Cloud 2025.1 recipes 🔐 Spring Security 7 modularized 🐘 Hibernate 7.2 migration recipe 🧪 JUnit 5.13 deprecated API upgrades 🎯 JavaScript: spread/rest syntax 🚢 Kubernetes v1.33-35 API migrations github.com/openrewrite/...

Today I’ll join the Code Remix Weekly to chat about my project @arconia.io aimed at improving the developer experience for Java and Spring Boot applications, and simplifying the adoption of cloud native patterns. OpenRewrite is a key tool for Arconia and I can’t wait to share more about it!

#OpenRewrite v8.69.0 is out! 🎁 🤖 NEW rewrite-ai to find libraries, models & agents 🟢 Node.js: AddDependency, transitive bumps, CVE scans 📦 Bun & YAML support for JS 🌱 SB4: modular starters + convert JAX-RS endpoints 🤠 Jackson 3: serialization config & exception handling github.com/openrewrite/...

👀 Curious what’s hot in #Java❓ You should be. The annual #InfoQ #TrendsReport is out! Key highlights: • Adoption of 𝐧𝐞𝐰 𝐉𝐚𝐯𝐚 𝐯𝐞𝐫𝐬𝐢𝐨𝐧𝐬 • Evolution of frameworks like 𝐒𝐩𝐫𝐢𝐧𝐠, 𝐉𝐚𝐤𝐚𝐫𝐭𝐚 𝐄𝐄, 𝐐𝐮𝐚𝐫𝐤𝐮𝐬, 𝐌𝐢𝐜𝐫𝐨𝐧𝐚𝐮𝐭, 𝐇𝐞𝐥𝐢𝐝𝐨𝐧 & 𝐌𝐢𝐜𝐫𝐨𝐏𝐫𝐨𝐟𝐢𝐥𝐞 📖 𝐑𝐞𝐚𝐝 𝐧𝐨𝐰: bit.ly/4pqtHd4 💪 𝐊𝐧𝐨𝐰𝐥𝐞𝐝𝐠𝐞 𝐢𝐬 𝐩𝐨𝐰𝐞𝐫! #StayAhead

#OpenRewrite v8.68.1 is out! 🛬 🌱 Spring Boot 4.0: additional properties & dependencies 🍃 Migrate Spring Retry to Resilience 🧪 Hamcrest to AssertJ & JMockit to Mockito fixes 🟢 Node 22/24 upgrade recipes: fs, zlib, crypto & more 🤠 Jackson v3: migrate modules & feature flags github.com/openrewrite/...

How did Uber migrate 1M lines of code in just 2 weeks??👀 Don't miss our webinar today to find out.⏯️ See how one of the world’s largest engineering teams tackles massive code migrations — fast, safe, and at scale.

The wait is over! @dashaun.com joins the Code Remix Weekly livestream TODAY to chat about all things Spring Boot 4.🥾 🔴 Watch live at 21:00 CET / 3 PM ET.

🎉 Spring Boot 4 is here!🍃 Upgrading doesn’t have to be painful. Moderne + OpenRewrite brings the automation! 🛠️ Learn how to modernize your stack, reduce tech debt, and unlock the latest features in our new blog.

#OpenRewrite 8.67.0 is here! 🛫 🆕 New rewrite-angular, rewrite-react & rewrite-jasperreports 🌱 Spring Boot 4.0 & Spring Batch 6.0 migrations ⚛️ React 19 upgrade recipe with forwardRef removal 🟢 Node.js crypto & util recipes ☕ Migrate all modules and formats for Jackson v3 github.com/openrewrite/...

Join the next Code Remix Weekly tomorrow with @tomcools.be, DevRel at Timefold! 🎙️ Discover Timefold, the powerful OptaPlanner fork, and learn about its origin, automatic migration, and how it rethinks breaking changes.💪 🔴 Tomorrow at 21:00 CET / 3 PM ET

Live from @timtebeek.github.io’s OpenRewrite workshop at Rabobank! 🗣️

#OpenRewrite 8.66.1 is here! 🚆 🌱 Spring Boot 4.0 migration recipes 🗂 Additional SpringFox conversions 🔐 Severity-based CVE filtering 🍐 Expand Guava to JDK conversions 🎯 Convert external `@InlineMe` annotations into recipes 🐛 Fixed Maven multi-module resource handling github.com/openrewrite/...

Join the next Code Remix Weekly to learn how to detect and fix quantum-vulnerable code across massive systems with Moderne's LST-powered analysis and PQC readiness workflows.💪 🔴 Tomorrow at 21:00 CET / 3 PM ET with guest @mkheck.bsky.social

🚀 Ready to refactor at scale? Join @mkheck.bsky.social & @timtebeek.github.io at #Devnexus for a hands-on workshop on Migration Engineering with OpenRewrite — automate upgrades, boost security & modernize your codebase with custom AI-powered recipes. devnexus.com/events/migra... 🎟️ - devnexus.com

𝐓𝐡𝐞 𝐉-𝐅𝐚𝐥𝐥 2025 𝐏𝐫𝐞𝐜𝐨𝐧𝐟𝐞𝐫𝐞𝐧𝐜𝐞 𝐡𝐚𝐬 𝐬𝐭𝐚𝐫𝐭𝐞𝐝! Today is all about learning, sharing ideas, and getting inspired before the main J-Fall event tomorrow. Let’s make it an amazing day together! #JFall2025 #Preconference #Java

🎉 The Marketplace has officially surpassed 5,000 recipes! 🎉 Huge thanks to our community for contributing, sharing, and automating code transformations. Here’s to cleaner, smarter code for everyone! 👏

#OpenRewrite v8.64.0 is out! 🎯 🔲 TOML building block recipes 🤠 Migrate Jackson v3 dataformats 🍁 Switch to Maven 4 🐳 Upgrade to Testcontainers v2 🏗️ beans.xml & web.xml to Spring 💉 Field to constructor injection for Spring 🚩 OpenFeature flag removal recipes docs.openrewrite.org/changelog/8-...

Class is in session! 📚 Introduction to OpenRewrite training is happening now.🤩 Couldn't make it? Head to our training hub to sign up for the next session: buff.ly/bHlO13z

👀 Got a refactoring nightmare or developer horror story? Comment or DM us with your stories of broken builds, cursed commits, and “it worked on my machine” moments and we'll share them live on the Code Remix Weekly Halloween special. 🎃

Looking forward to participating in this meetup! In great company too 😄

Our next meetup will take place on November 4th at ING Leeuwarden to help you improve your testing with @timtebeek.github.io covering AssertJ and @simoneromani.bsky.social mutating tests for more confidence. Sign up at www.meetup.com/jug-noord/ev... !

#OpenRewrite v8.63.0 is out! 🍂 🚀 Spring Boot to Quarkus migration recipes 🛠️ Oracle/MSSQL to PostgreSQL migrations 🤠 Jackson v3 upgrade recipes 🍁 Support additional Maven (re)sources 🧪 JUnit 5, 6 & Jupiter best practices 🔧 Expanded Hibernate 7 migration ➕ Many more fixes github.com/openrewrite/...

Great to watch "Enable Digital sovereignty by tech stack liquidity" by @mboegie.dev at #devoxxbe #openrewrite

We’re live at #DevoxxBelgium! 🎉 Swing by our booth #11 to say hi, meet the team, and see how Moderne automates migrations and remediation across thousands of repos in minutes. 👋

🧪 Deep Dive Monday at #Jfokus - Break Your Testing Habits with Tim te Beek & Rick Ossendrijver Unlearn the old, master the new - JUnit 6, AssertJ 4 & modern testing practices. Forge your path in the halls of code ⚡ 👉 www.jfokus.se #DeveloperConference #Java #Testing #JUnit #AssertJ #CleanCode

There were even 10 people standing in the back of the room during our presentation!

Packed room! Looking forward to this. If you can't fit, here's the link. openrewrite.github.io/break-your-t...

Jackson 3 is here! Use these automated migration recipes to handle the package change as well as other breaking changes. 🤗 docs.openrewrite.org/recipes/java/jackson/upgradejackson_2_3

Spring Boot 4 is moving to Jackson 3 (already in M3). 👉 Check out the Jackson 3 Migration Guide: github.com/FasterXML/ja... 👉 Also useful, the OpenRewrite recipe: docs.openrewrite.org/recipes/java... More insights coming soon in the official Spring blog post next week.

JUnit 6 is here! Ready to upgrade? We’ve got you covered with step-by-step recipes to move from 3 → 4 → 5 → 6. docs.openrewrite.org/recipes/java...