Rakefile in rake_circle_ci-0.8.0.pre.3 vs Rakefile in rake_circle_ci-0.8.0.pre.4

@@ -48,10 +48,11 @@
   t.environment_variables = {
       ENCRYPTION_PASSPHRASE:
           File.read('config/secrets/ci/encryption.passphrase')
               .chomp
   }
+  t.checkout_keys = []
   t.ssh_keys = [
       {
           hostname: "github.com",
           private_key: File.read('config/secrets/ci/ssh.private')
       }
@@ -76,9 +77,10 @@
 
 namespace :pipeline do
   task :prepare => [
       :'circle_ci:project:follow',
       :'circle_ci:env_vars:ensure',
+      :'circle_ci:checkout_keys:ensure',
       :'circle_ci:ssh_keys:ensure',
       :'github:deploy_keys:ensure'
   ]
 end