# changedetection.io 0.55.1

- Product: changedetection.io (https://whatsnew.fyi/product/changedetection-io)
- Vendor: changedetection.io
- Date: 2026-04-27
- Version: 0.55.1
- Original notes: https://github.com/dgtlmoon/changedetection.io/releases/tag/0.55.1
- Permalink: https://whatsnew.fyi/product/changedetection-io/releases/0.55.1

What's New is an index, not a publisher: every entry below links to the vendor's own release notes, which are the authoritative source. Entries are labelled where they are hand-curated sample data, pre-releases, or drawn from a secondary source such as a developer blog.

Reuse: the summaries, labels and curation here are © What's New. Quote freely with attribution and a link back; wholesale republication of the corpus is not permitted — terms: https://whatsnew.fyi/terms. The vendors' own release notes remain their publishers'.

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- **added** — AI / LLM rulesets to set AI change detection rules and text summary rules using hundreds of existing providers via LiteLLM
- **fixed** — Broken opacity feedback for restock/price fields on tag edit screen
- **fixed** — Use pgettext for diff page From/To labels to prevent context collisions
- **fixed** — DeprecationWarning: codecs.open() is deprecated by using open() instead
- **changed** — Update python-engineio requirement from <5,>=4.9.0 to >=4.13.1,<5

#### Big stuff

AI / LLM rulesets - Set your AI change detection rules and text summary rules, use hundreds of existing providers via LiteLLM.

##### What's Changed
* Use pgettext for diff page From/To labels to prevent context collisions by @skkzsh in https://github.com/dgtlmoon/changedetection.io/pull/4073
* Fix broken opacity feedback for restock/price fields on tag edit screen by @skkzsh in https://github.com/dgtlmoon/changedetection.io/pull/4072
* i18n: Wrap untranslated UI strings in include_subtract.html and add ja translations by @skkzsh in https://github.com/dgtlmoon/changedetection.io/pull/4054
* Re #4080 msgfmt linting by @dgtlmoon in https://github.com/dgtlmoon/changedetection.io/pull/4081
* Update python-engineio requirement from <5,>=4.9.0 to >=4.13.1,<5 by @dependabot[bot] in https://github.com/dgtlmoon/changedetection.io/pull/4079
* CI - Translation sync check by @dgtlmoon in https://github.com/dgtlmoon/changedetection.io/pull/4085
* DeprecationWarning: codecs.open() is deprecated. Use open() instead. by @skkzsh in https://github.com/dgtlmoon/changedetection.io/pull/4078
* LLM implementation - by @dgtlmoon in https://github.com/dgtlmoon/changedetection.io/pull/4057
* i18n: Consolidate fragmented gettext calls into entire-sentence msgids by @skkzsh in https://github.com/dgtlmoon/changedetection.io/pull/4076
* Translations - Playwright macro unused, add extra linting for translations, add TRANSLATORS.md by @dgtlmoon in https://github.com/dgtlmoon/changedetection.io/pull/4087
* [i18n] "Usage" tab label in AI settings is ambiguous across contexts #4086 by @dgtlmoon in https://github.com/dgtlmoon/changedetection.io/pull/4088
* Update Korean language by @limeade23 in https://github.com/dgtlmoon/changedetection.io/pull/4084

##### New Contributors
* @limeade23 made their first contribution in https://github.com/dgtlmoon/changedetection.io/pull/4084

**Full Changelog**: https://github.com/dgtlmoon/changedetection.io/compare/0.54.10...0.55.1