# Rake gems

**URL:** <https://www.ruby-forum.com/t/rake-gems/147980>\
**Category:** Rails\
**Created:** [September 8, 2008, 2:00am UTC](https://www.ruby-forum.com/t/rake-gems/147980 "2008-09-08T02:00:15Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![Nik\_B](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/n/ee59a6/32.png) [@Nik\_B](https://www.ruby-forum.com/u/Nik_B)\
**Post date:** [September 8, 2008, 2:00am UTC](https://www.ruby-forum.com/t/rake-gems/147980/1 "2008-09-08T02:00:15Z")

</div>

I’ve upgraded to Rails 2.1.0, I have rake version 0.8.1, and I have  
rubygems version 1.2.0.

I’ve tried to use the gem dependency feature in Rails 2.1, but when I  
try the new rake gems task, I get " Don’t know how to build task  
‘gems’ "

rake -T gems simply gives me : [http://pastie.org/267864](http://pastie.org/267864)

Any clues?