Jupyter Book Releases

Release notes for Jupyter Book.

v2.1.5¶

2026-05-02 | View release

This brings in two new releases and several bugfixes, accessibility improvements, and enhancements in mystmd and myst-theme. Release notes for each below:

• https://github.com/jupyter-book/mystmd/releases/tag/mystmd%401.9.0

• https://github.com/jupyter-book/myst-theme/releases/tag/myst-to-react%401.3.0

Maintenance and upkeep improvements

• Bump the actions group in /.github/workflows with 5 updates #2617 (@bsipocz)

• Fix docs noxfile and add a footer #2609 (@choldgraf)

• Bump the actions group in /.github/workflows with 3 updates #2608 (@bsipocz)

Documentation improvements

• Point to mystmd docs more and move to index pages #2620 (@choldgraf)

Other merged PRs

• Update myst cli #2621 (@choldgraf)

v2.1.4¶

2026-04-01 | View release

2.1.4

(Full Changelog)

Maintenance and upkeep improvements

• bump myst version #2607 (@choldgraf)

• 🔑 Remove NPM_TOKEN in publish workflow #2605 (@agoose77)

• Bump MyST and add toc children option #2600 (@choldgraf)

• Bump actions/setup-python from 5 to 6 in /.github/workflows in the actions group #2596 (@agoose77)

Documentation improvements

• Docs: patch url for v1 docs (*/v1 --> */v1/intro.html) #2598 (@evdcush, @bsipocz)

v2.1.2¶

2026-02-01 | View release

2.1.2

(Full Changelog)

Maintenance and upkeep improvements

• Bump the actions group across 1 directory with 2 updates #2571 (@bsipocz)

• fix: specify files in package.json #2568 (@agoose77, @bsipocz, @choldgraf)

• Bump actions/create-github-app-token from 1 to 2 #2555 (@bsipocz)

Documentation improvements

• Move content to jupyterbook.org repo #2575 (@choldgraf)

• doc: fix the stated math engine to be KaTeX #2570 (@akhmerov, @bsipocz, @rowanc1)

• Update release instructions #2562 (@choldgraf, @agoose77, @bsipocz)

v2.1.1¶

2026-01-22 | View release

Jupyter Book’s functionality primarily comes from the core tools and plugins in the MyST ecosystem. See the release notes for new releases below for the latest enhancements and bugfixes.

New releases in the MyST Ecosystem

This brings in:

• The latest mystmd release, 1.8.0: https://github.com/jupyter-book/mystmd/releases/tag/mystmd%401.8.0

• The latest myst-theme release, 1.1.0: https://github.com/jupyter-book/myst-theme/releases/tag/myst-to-react%401.1.0

Bugs fixed

• Remove description from dynamic #2518 (@choldgraf, @agoose77)

Maintenance and upkeep improvements

• Update latest myst cli #2563 (@choldgraf, @agoose77)

• MAINT: adding more dependabot config to ensure less noise and passing PRs #2560 (@bsipocz)

• Bump actions/upload-pages-artifact from 3 to 4 #2558 (@bsipocz)

• Bump actions/checkout from 2 to 6 #2557 (@bsipocz)

• Bump actions/setup-node from 4 to 6 #2556 (@bsipocz)

• Bump actions/configure-pages from 3 to 5 #2554 (@bsipocz)

• update GitHub Actions via Dependabot #2535 (@afeld, @bsipocz, @choldgraf)

• MAINT: adding description metadata #2516 (@bsipocz, @choldgraf, @rowanc1)

Documentation improvements

• include custom css #2551 (@FreekPols)

• Surface JB v1 docs more prominently, and reorganize General FAQs #2545 (@emiliom, @bsipocz, @choldgraf, @rowanc1)

• document breaking changes in web page path behavior #2536 (@afeld, @choldgraf)

• Add Protein–Peptide Molecular Mimicry Study entry #2532 (@singh-sanju, @FreekPols)

• DOC: rewrite Fornax gallery entries #2531 (@bsipocz, @choldgraf)

• Un-comment blog in nav #2529 (@choldgraf)

• Update gallery.yml #2527 (@snowch, @bsipocz)

• DOC: update IRSA title to have astronomy mentioned somewhere #2524 (@bsipocz, @rowanc1)

• :book: Add RELEASE #2521 (@agoose77)

• update myst tables plugin #2519 (@choldgraf, @bsipocz)

• randomized gallery #2512 (@FreekPols, @bsipocz)

Other merged PRs

• Fix image mechanics book #2550 (@FreekPols)

• Add dolfiny to gallery #2548 (@schnellerhase, @FreekPols)