# Fixing the error: can't find gem bundler

Greetings friends!

If you are in a rails project and need to install the gem `bundler`, but you got this error:

```bash
can't find gem bundler (>= 0.a)
```

The best way to install the gem bundler and avoid or fix this error is to install the bundler gem by getting the specific version contained in the `Gemfile.lock` with the command below:

```bash
gem install bundler -v "$(grep -A 1 "BUNDLED WITH" Gemfile.lock | tail -n 1)"
```

I hope that this content helps you! See you in the next article!