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January 2026 Releases

· 4 min read
Ken Odegard
Ken Odegard
Conda Maintainer
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The January 2026 releases included updates to conda, conda-build, and conda-pack! 🎉 All of these have been released to both defaults and conda-forge channels.

Changes in conda 26.1.0​

To update conda to the latest version, run:

conda install --name base conda=26.1.0

Notable Changes:

  • Added support for Python 3.14.
  • Added new --size flag to conda info --envs, conda env list, and conda list commands to display disk usage for environments and packages.
  • Added --fix flag to conda doctor with health check fix capabilities.
  • Added -s as a shorthand alias for conda run --no-capture-output and -O as an alias for --override-channels.
  • Speed improvements: faster context initialization through caching condarc file reads, deferred PrefixData record instantiation, and faster conda run via inline environment activation.
  • Added conda_package_extractors plugin hook to allow plugins to register custom package archive extractors.
  • Added conda.cli.condarc.ConfigurationFile class for programmatic configuration file manipulation.
  • conda run now properly deactivates the environment on exiting the command.
  • Improved error messages for HTTP 403 responses and various platform-specific issues.
  • Fixed parallel conda command failures on Windows by using GUIDs for unique temp filenames.
  • Fixed conda clean --tarballs to also clean up .partial download files.

Check out the full changelog for more: 26.1.0

Changes in conda-build 26.1.0​

To update conda-build to the latest version, run:

conda install --name base conda-build=26.1.0

Notable Changes:

  • Added support for CEP 28 (customizable system DLL linkage checks for Windows).
  • Enabled echo on for Windows build scripts for better debugging visibility.
  • Added riscv64 architecture support to the cdt() Jinja function.
  • Fixed rpath handling on macOS to delete rpath before adding to avoid space errors.
  • Fixed handling of unknown dynamic tags in liefldd.
  • Fixed handling of empty source archives (now ignores and continues instead of failing).
  • Bumped minimum conda version to 25.11.0 and conda-libmamba-solver to 25.11.0.

Check out the full changelog for more: 26.1.0

Changes in conda-pack 0.9.0/0.9.1​

To update conda-pack to the latest version, run:

conda install conda-pack=0.9.1

Notable Changes:

  • Replaced deprecated pkg_resources with importlib.resources for better compatibility with modern Python.
  • Added optional progress bar to conda-unpack for better user feedback.
  • Fixed issue with extended path format on Windows.
  • Fixed executables for all users.
  • Updated Python supported versions.

Check out the full changelog for more: 0.9.0/0.9.1

We ❤️ Our Community​

Altogether, we had 8 new contributors this release cycle; thank you to all of our open source community members for helping make these improvements possible.