v0.12.0

What's Changed

• chore: bump version to 0.11.1.dev0 after 0.11.0 release by @cursor[bot] in #1529
• textarena_env: parse TEXTARENA_KW_* values as JSON by @sergiopaniego in #1530
• Raise SessionLostError when the WebSocket drops mid-episode by @sergiopaniego in #1536
• chore(deps): bump authlib from 1.8.0 to 1.9.1 in /tests/validation_runtime by @dependabot[bot] in #1538
• chore(deps): bump authlib from 1.7.1 to 1.9.1 in /envs/websearch_env by @dependabot[bot] in #1539
• Require --env-url in the Wordle GRPO script by @sergiopaniego in #1537
• chore(deps): combine Dependabot GitHub Actions updates (2026-11-04) by @burtenshaw in #1557
• chore(deps): bump huggingface/doc-builder/.github/workflows/upload_pr_documentation.yml from 8440c79a619b26fbf8444f42262757fbb8718617 to 1d2fd4ce6230951d654b5ec9b5cdb2b8175dbe8c by @dependabot[bot] in #1546
• chore(deps): bump pypa/gh-action-pypi-publish from 1.14.2 to 1.14.3 by @dependabot[bot] in #1547
• chore(deps): bump huggingface/doc-builder/.github/workflows/build_main_documentation.yml from 8440c79a619b26fbf8444f42262757fbb8718617 to 1d2fd4ce6230951d654b5ec9b5cdb2b8175dbe8c by @dependabot[bot] in #1548
• chore(deps): bump huggingface/doc-builder/.github/workflows/build_pr_documentation.yml from 8440c79a619b26fbf8444f42262757fbb8718617 to 1d2fd4ce6230951d654b5ec9b5cdb2b8175dbe8c by @dependabot[bot] in #1549
• chore(deps): bump astral-sh/setup-uv from 10.3.0 to 10.3.3 by @dependabot[bot] in #1550
• Keep the qed_math_env answer-mode reference server-side and stop scoring after done in reasoning_gym_env and finqa_env by @jimmy-holdout in #1552
• Fix async pre-hook ordering in rubric containers by @Hoyant-Su in #1543
• rubrics: reset child rubrics when a rubric is reset by @TheDeadcoder in #1535
• Add a Kubernetes echo example by @rohitrsh in #1526
• fix: stop awm code verifiers from passing on an untouched database by @saloni-garg in #1477
• capture: share image history strings across turns to avoid quadratic memory by @caoxiaoyuyuyuyuyu in #1534
• fix(core): parse continued Dockerfile CMD instructions by @GoldArowana in #1532
• Train a Sudoku agent: SFT, then GRPO by @sergiopaniego in #1554
• fix: harden HFSandboxProvider local auth proxy by @dongjiang1989 in #1558
• Release OpenEnv 0.12.0 by @cursor[bot] in #1544

New Contributors

• @jimmy-holdout made their first contribution in #1552
• @Hoyant-Su made their first contribution in #1543
• @TheDeadcoder made their first contribution in #1535
• @saloni-garg made their first contribution in #1477
• @caoxiaoyuyuyuyuyu made their first contribution in #1534
• @GoldArowana made their first contribution in #1532
• @dongjiang1989 made their first contribution in #1558

Full Changelog: v0.11.0...v0.12.0