# LlamaIndex v0.14.20

- Product: LlamaIndex (https://whatsnew.fyi/product/llamaindex)
- Vendor: LlamaIndex
- Date: 2026-04-03
- Version: v0.14.20
- Original notes: https://github.com/run-llama/llama_index/releases/tag/v0.14.20
- Permalink: https://whatsnew.fyi/product/llamaindex/releases/v0.14.20

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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- **security** — Fix vulnerability with nltk across multiple packages

#### Release Notes

##### [2026-04-03]

###### llama-index-agent-agentmesh [0.2.0]

- fix vulnerability with nltk ([#21275](https://github.com/run-llama/llama_index/pull/21275))

###### llama-index-callbacks-agentops [0.5.0]

- chore(deps): bump the uv group across 50 directories with 2 updates ([#21164](https://github.com/run-llama/llama_index/pull/21164))
- chore(deps): bump the uv group across 24 directories with 1 update ([#21219](https://github.com/run-llama/llama_index/pull/21219))
- chore(deps): bump the uv group across 21 directories with 2 updates ([#21221](https://github.com/run-llama/llama_index/pull/21221))
- fix vulnerability with nltk ([#21275](https://github.com/run-llama/llama_index/pull/21275))

###### llama-index-callbacks-aim [0.4.1]

- fix vulnerability with nltk ([#21275](https://github.com/run-llama/llama_index/pull/21275))

###### llama-index-callbacks-argilla [0.5.0]

- chore(deps): bump the uv group across 58 directories with 1 update ([#21166](https://github.com/run-llama/llama_index/pull/21166))
- chore(deps): bump the uv group across 24 directories with 1 update ([#21219](https://github.com/run-llama/llama_index/pull/21219))
- chore(deps): bump the uv group across 21 directories with 2 updates ([#21221](https://github.com/run-llama/llama_index/pull/21221))
- fix vulnerability with nltk ([#21275](https://github.com/run-llama/llama_index/pull/21275))

###### llama-index-callbacks-arize-phoenix [0.7.0]

- chore(deps): bump the uv group across 58 directories with 1 update ([#21166](https://github.com/run-llama/llama_index/pull/21166))
- chore(deps): bump the uv group across 24 directories with 1 update ([#21219](https://github.com/run-llama/llama_index/pull/21219))
- chore(deps): bump the uv group across 21 directories with 2 updates ([#21221](https://github.com/run-llama/llama_index/pull/21221))
- fix vulnerability with nltk ([#21275](https://github.com/run-llama/llama_index/pull/21275))

###### llama-index-callbacks-honeyhive [0.5.0]

- chore(deps): bump the uv group across 58 directories with 1 update ([#21166](https://github.com/run-llama/llama_index/pull/21166))
- chore(deps): bump the uv group across 24 directories with 1 update ([#21219](https://github.com/run-llama/llama_index/pull/21219))
- chore(deps): bump the uv group across 21 directories with 2 updates ([#21221](https://github.com/run-llama/llama_index/pull/21221))
- fix vulnerability with nltk ([#21275](https://github.com/run-llama/llama_index/pull/21275))

###### llama-index-callbacks-langfuse [0.5.0]

- chore(deps): bump the uv group across 58 directories with 1 update ([#21166](https://github.com/run-llama/llama_index/pull/21166))
- chore(deps): bump the uv group across 24 directories with 1 update ([#21219](https://github.com/run-llama/llama_index/pull/21219))
- chore(deps): bump the uv group across 21 directories with 2 updates ([#21221](https://github.com/run-llama/llama_index/pull/21221))
- fix vulnerability with nltk ([#21275](https://github.com/run-llama/llama_index/pull/21275))

###### llama-index-callbacks-literalai [1.4.0]

- chore(deps): bump the uv group across 58 directories with 1 update ([#21166](https://github.com/run-llama/llama_index/pull/21166))
- chore(deps): bump the uv group across 24 directories with 1 update ([#21219](https://github.com/run-llama/llama_index/pull/21219))
- chore(deps): bump the uv group across 21 directories with 2 updates ([#21221](https://github.com/run-llama/llama_index/pull/21221))
- fix vulnerability with nltk ([#21275](https://github.com/run-llama/llama_index/pull/21275))

###### llama-index-callbacks-openinference [0.5.0]

- chore(deps): bump the uv group across 58 directories with 1 update ([#21166](https://github.com/run-llama/llama_index/pull/21166))
- chore(deps): bump the uv group across 24 directories with 1 update ([#21219](https://github.com/run-llama/llama_index/pull/21219))
- chore(deps): bump the uv group across 21 directories with 2 updates ([#21221](https://github.com/run-llam

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