Tim te Beek

#OpenRewrite v8.94.0 out! 🚀 🐍 Python 3.15 upgrades & uv.lock edits 🌱 Spring Boot 4.1: RestTemplate → RestClient 🛡️ Hundreds of recipe correctness fixes 🐘 Gradle & Maven dependency exclusions 🏗️ HCL & Terraform recipes 🗄️ Hibernate 7 XML migrations github.com/openrewrite/rewrite/releases/tag/v8.94.0

Upgraded to Maven 3.10.0 and an untouched pom.xml now fails? 😅 Duplicate dependency and plugin declarations used to warn. Now they stop the build. 🛑 @timtebeek.github.io's new OpenRewrite recipe fixes them in every repo: buff.ly/iVFhJ5t

The Moderne CLI gives your agent a deterministic layer. Your agent picks the right recipe and runs it on every repo. After that, it checks each build and fixes whatever the recipe didn't cover. Try it yourself today on open-source Java, Python, and JavaScript repositories: buff.ly/NkJAOLd

#OpenRewrite v8.92.8 out! 🚀 🛡️ OWASP A07 & A10:2025 recipes 🔍 Sonar rules: locks, threads, JDBC 🌶️ lombok.config recipes ☁️ Spring Cloud Azure for Boot 3.5 & 4 🟢 Node.js & Go library migrations 🔷 C# transitive dependency graphs buff.ly/z5VBNiI

#OpenRewrite v8.91.0 out! 🚀 💎 New Ruby support 🅰️ Angular 22 upgrades 🌱 Spring Boot 4 modular starters ☕ Java 25: AspectJ upgrade, fold mockito-inline ⚙️ GitHub Actions: merge groups, setup-python 🐹 Go & Python harden static analysis 🔐 Detect OWASP LLM01 prompt-injection github.com/openrewrite/...

Our Introduction to OpenRewrite is now available on demand!🎉 Go through setting up and running recipes with the Moderne CLI, composing custom transformations, and analyzing your codebase with data tables and visualizations. Start the course → buff.ly/GtAfzPn

#OpenRewrite v8.89.0 out! 🚀 🔷 82 WPF code quality recipes for C# 📦 Native npm/pnpm/yarn/bun lockfile regeneration 🐍 Python type attribution via ty 🐘 Gradle 9.7 & Maven 4 deprecation recipes 🥒 Complete Cucumber-JVM 4.x → 7.x migration 🌱 Spring Batch 6 chunk-oriented steps github.com/openrewrite/...

Our Introduction to OpenRewrite is now available on demand!🎉 Go through setting up and running recipes with the Moderne CLI, composing custom transformations, and analyzing your codebase with data tables and visualizations. Start the course → buff.ly/GtAfzPn

Our next #JCON2026 session is live: 'Better #Assertions with #AssertJ' with @timtebeek Not all #testing libraries are equal. Sure they all run your tests, but what happens when they #fail? “Expected ‘true’, was ‘false’” won’t help you … Grab your coffee and hit play: youtu.be/W7BhLNVHuqo

#OpenRewrite v8.88.0 out! 🚀 🟪 Expand Kotlin & Kotlin DSL support 🌱 Spring Data 4 & MongoDB recipes 🧪 TestNG assertions → AssertJ 🔷 C# packages.config → PackageReference 🐍 Python lockfile generation 🐛 Maven/Gradle plugin performance fixes 🧹 Legacy collection migrations github.com/openrewrite/...

#OpenRewrite v8.87 out! 🚀 🔍 Prethink for messaging & Python 📦 Maven/Gradle resolution fixes 🔷 .NET Framework retargeting 🐹 Go LST build-out (go.sum, modules) 🔴 Scala parser hardening 🗄️ New SQL anti-pattern recipes 🌱 Migrate Spring RestClient & Data Redis github.com/openrewrite/...

Code Remix Summit 2027: Call for sessions is open! Deadline is September 30. If you've deployed code to solve a hard, real-world problem, we want the talk. If it runs in production, we're interested. ➡️ Submit your session: buff.ly/L9lEvrl

Coming up next on Code Remix Summer: Join Ryan Trontz from Tinder tomorrow, June 26, for Building The Upgrade Muscle with OpenRewrite at Tinder.😎🔥 Learn how to build an upgrade strategy that developers actually want to commit to. 💌 buff.ly/rN339hW

In the first episode of our brand new show IntelliJ IDEA Tech Talks, learn how to solve nullability issues in your Spring (Boot) applications by adding Specify, from our guest @0.5ritter.de - hosted by yours truly! #IntelliJIDEA #JSpecify #Java

Today on Code Remix Weekly: Devin and Ryan from Tinder share how to combine tools like OpenRewrite with LLMs in a complementary, cost-effective way, and how to apply that approach to build a sustainable, developer-friendly upgrade strategy. 🔴 Watch live at 21:00 CET / 3 PM ET

Next Code Remix Weekly: Devin Thomson and Ryan Trontz share how Tinder built its “upgrade muscle” through repeatable, increasingly automated platform initiatives, and how OpenRewrite helped make that possible. 🔴 Tune in tomorrow at 21:00 CET / 3 PM ET

#OpenRewrite v8.85 is out! 🚀 🐍 Pydantic migration recipes 🔴 Big Scala parser improvements 🐹 Go LST build-out (multi-value returns, receivers) 🌱 Spring Boot 4.1 migrations 🧪 JUnit 6 migration fixes 🛡️ New rewrite-nullability for NullAway/JSpecify ☕ Gradle 9 deprecations github.com/openrewrite/...

Today on Code Remix Weekly: Oleg Šelajev (@shelajev.bsky.social) experiments with Sandbox Kits, working toward one command that drops an agent into a Moderne-aware Docker sandbox: mod CLI, recipe-aware memory, MODERNE_TOKEN the agent never sees. 🔴 Watch live at 21:00 CET/3 PM ET

Two expert-led trainings are happening this week! Be sure to save your spot. 📌Tuesday, June 9, 10 AM ET | Advanced OpenRewrite Training Sign up: buff.ly/k0ZTZEX 📌Thursday, June 11, 10 AM ET | Spring Boot 4.1 at Scale Sign up: buff.ly/VSP04sl

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! 🗣️