# C/igraph 1.0.0

**URL:** <https://igraph.discourse.group/t/c-igraph-1-0-0/2203>\
**Category:** Announcements\
**Created:** [19 September 2025 22:04 UTC](https://igraph.discourse.group/t/c-igraph-1-0-0/2203 "2025-09-19T22:04:09Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![system](https://yyz2.discourse-cdn.com/free1/user_avatar/igraph.discourse.group/system/32/1179_2.png) [@system](https://igraph.discourse.group/u/system)\
**Post date:** [19 September 2025 22:04 UTC](https://igraph.discourse.group/t/c-igraph-1-0-0/2203/1 "2025-09-19T22:04:09Z")

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Nearly twenty years after the first igraph release, igraph 1.0 has finally arrived. This release focuses on providing a stable and more consistent interface that users and downstream maintainers can rely on with confidence, as well as adding new features that required API-breaking changes. There is now an official versioning policy, see [`VERSIONING.md`](https://github.com/igraph/igraph/blob/1.0.0/VERSIONING.md).

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This is a companion discussion topic for the original entry at [https://igraph.org/2025/09/20/igraph-1.0.0-c.html](https://igraph.org/2025/09/20/igraph-1.0.0-c.html)

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**Author:** ![szhorvat](https://yyz2.discourse-cdn.com/free1/user_avatar/igraph.discourse.group/szhorvat/32/3_2.png) [@szhorvat](https://igraph.discourse.group/u/szhorvat)\
**Post date:** [20 September 2025 00:35 UTC](https://igraph.discourse.group/t/c-igraph-1-0-0/2203/2 "2025-09-20T00:35:49Z")

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