# Schema versioning

**URL:** <https://discourse.citationstyles.org/t/schema-versioning/688>\
**Category:** CSL Development\
**Created:** [July 13, 2009, 3:36pm UTC](https://discourse.citationstyles.org/t/schema-versioning/688 "2009-07-13T15:36:35Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![Bruce\_D\_Arcus1](https://avatars.discourse-cdn.com/v4/letter/b/4bbf92/32.png) [@Bruce\_D\_Arcus1](https://discourse.citationstyles.org/u/Bruce_D_Arcus1)\
**Post date:** [July 13, 2009, 3:36pm UTC](https://discourse.citationstyles.org/t/schema-versioning/688/1 "2009-07-13T15:36:35Z")

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Here’s the deal on versioning:

I’ve added a required version attribute to the root, with a value of  
"1.0". A file without the attribute will be assumed to be 0.8.

Once we’re comfortable with the branch schema, I’ll merge to trunk,  
and push out a 1.0b1 tag.

I see no point in 0.9.

Bruce