# Lucene 4.0 **URL:** \ **Category:** Elasticsearch\ **Created:** [December 19, 2012, 2:00pm UTC](https://discuss.elastic.co/t/lucene-4-0/10122 "2012-12-19T14:00:31Z")\ **Posts on this page:** 4\ **Page:** 1
**Author:** ![ajan](https://avatars.discourse-cdn.com/v4/letter/a/d07c76/32.png) [@ajan](https://discuss.elastic.co/u/ajan)\ **Post date:** [December 19, 2012, 2:00pm UTC](https://discuss.elastic.co/t/lucene-4-0/10122/1 "2012-12-19T14:00:31Z")
Does version 0.20.1 comes with lucene upgrade to 4.0? -- ---
**Author:** ![Rafal\_Kuc\_3](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/rafal_kuc_3/32/799_2.png) [@Rafal\_Kuc\_3](https://discuss.elastic.co/u/Rafal_Kuc_3)\ **Post date:** [December 19, 2012, 2:07pm UTC](https://discuss.elastic.co/t/lucene-4-0/10122/2 "2012-12-19T14:07:16Z")
Hello! No, its based on Lucene 3.6.1 -- Regards, Rafał Kuć Sematext :: [http://sematext.com/](http://sematext.com/) :: Solr - Lucene - Nutch - Elasticsearch > Does version 0.20.1 comes with lucene upgrade to 4.0? -- ---
**Author:** ![Itamar\_Syn\_Hershko](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/itamar_syn_hershko/32/725_2.png) [@Itamar\_Syn\_Hershko](https://discuss.elastic.co/u/Itamar_Syn_Hershko)\ **Post date:** [December 19, 2012, 2:08pm UTC](https://discuss.elastic.co/t/lucene-4-0/10122/3 "2012-12-19T14:08:13Z")
No, that would be 0.21 On Wed, Dec 19, 2012 at 4:00 PM, ajan [jan.afzal@gmail.com](mailto:jan.afzal@gmail.com) wrote: > Does version 0.20.1 comes with lucene upgrade to 4.0? > > -- -- ---
**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\ **Post date:** [July 6, 2017, 2:59am UTC](https://discuss.elastic.co/t/lucene-4-0/10122/4 "2017-07-06T02:59:17Z")