Node.js: OpenSSL 4.1 Upgrade and Lithium LTS Transition
Node.js is landing the move to OpenSSL 4.1 with related crypto and TLS test fixes, alongside targeted reliability fixes for QUIC, FFI and streams. Version 26.13 also marks the start of Long Term Support under the codename Lithium.
Duration: PT2M29S
Episode overview
This episode is a short developer briefing from Node.js.
It explains recent repository work in plain language.
- Show: Node.js
- Published: 2026-10-24T13:05:48Z
- Audio duration: PT2M29S
Transcript excerpt
This excerpt keeps the crawler page concise. Listen to the episode or use the RSS feed for the full update.
Good morning, it's Saturday, October 24th, 2026, and this is your Node.js briefing.
The lead pattern is OpenSSL 4 point 1. Preparation work and the automated dependency update are landing on main, with test and concurrency fixes following close behind.
That upgrade touches cryptography across the runtime. The prep work in PR 66758 updated the updater and build configuration ahead of the 4 point 1 release, and the automated update in PR 66971 brings 4 point 1 point 0 to main. For developers, the risk is behavior change in TLS and crypto. A new regression test…
The second theme is runtime reliability. In QUIC, PR 66968 tightens crypto error classification so HTTP/3 application codes are no longer mislabeled as TLS alerts, following the RFC range for transport errors. And in FFI, PR 66918 fixes deferred work after event-loop callbacks, ensuring next-tick and microtask…
Finally, build and release hygiene. Perfetto tracing tests are now set up for Windows builds in PR 66731, and shared Brotli builds and leaner lint checkouts reduce breakage and CI cost. Notably, PR 66965 marks version 26 point 13 Lithium, moving Node 26 into Long Term Support through April 2029 with no behavior…
What's…
Nearby episodes from Node.js
- Streams Async Context Fixes and Out-of-Band Release
- OpenSSL 4.1 Upgrade and Engine Removal
- Weekly Recap - OpenSSL 4 Transition, Performance Gains and Hardening
- AbortSignal Speedup and Shutdown Fixes
- Memory Safety Fixes and Filesystem Parity
- BoringSSL Compatibility and Stream Context Fixes
- Certificate Trust Fixes and TLS Throughput
- Zlib Speed Push and Boundary Hardening