v305

• Added a warning if an existing Python virtual environment is found in the build directory at .venv/ or venv/. In the future this warning will be made an error. (#1890)

v304

• Fixed Django collectstatic and NLTK downloader support for apps that use config vars that shadow internal buildpack variable names (such as CACHE_DIR). (#1888)

v303

• Updated uv from 0.8.9 to 0.8.13. (#1880)
• Reduced default curl timeouts for faster retries of any transient connection issues on Heroku. (#1884)
• Added support for overriding the default curl timeouts using CURL_CONNECT_TIMEOUT and CURL_TIMEOUT. These are intended for use in non-Heroku environments with slow connections, and so must be set via the build system rather than app config vars. (#1884)
• Improved log output during curl retry attempts. (#1884)
• Switched to Bash 5.0's EPOCHREALTIME for buildpack data store timing logic. (#1881)

v302

• Stopped setting the PYTHONHASHSEED env var. (#1876)
• Removed support for BUILDPACK_S3_BASE_URL. (#1875)
• Refactored buildpack data store and bin/report to simplify the implementation and fix some string escaping bugs. (#1878)

v301

• Simplified the handling of caches written by older buildpack versions. (#1870)

v300

• The Python 3.13 version alias now resolves to Python 3.13.7. (#1868)

v299

• Updated uv from 0.8.5 to 0.8.9. (#1866)

v298

• The Python 3.13 version alias now resolves to Python 3.13.6. (#1861)
• Fixed the stack version check to correctly show the "stack not supported" error message for the EOL Heroku-20, instead of "stack not recognised". (#1860)

v297

• Updated pip from 25.1.1 to 25.2. (#1848)
• Updated Poetry from 2.1.3 to 2.1.4. (#1858)
• Updated uv from 0.8.4 to 0.8.5. (#1857)

v296

• Stopped installing SQLite headers and CLI. (#1854)