When I tried to deploy second part of RoR tutorial to Heroku I get this error: An error occurred while installing sqlite3 (1.3.5), and Bundler cannot continue.
Make sure that gem install sqlite3 -v '1.3.5' succeeds before bundling. ! ! Failed to install gems via Bundler. ! ! Detected sqlite3 gem which is not supported on Heroku. ! http://devcenter.heroku.com/articles/how-do-i-use-sqlite3-for-development ! ! Heroku push rejected, failed to compile Ruby/rails app To git@heroku.com:thawing-beyond-7283.git ! [remote rejected] master -> master (pre-receive hook declined) error: failed to push some refs to ‘git@heroku.com:thawing-beyond-7283.git’ I searched a little bit about this error and find

this stackoverflow post. But when I look more carefully on the Gemfile syntax I found a mistake. I used simply:

But I should have:

As RoR tutorial states.