diff --git a/lib/travis/yml/config.rb b/lib/travis/yml/config.rb
index e5e75b8eb..0e6723522 100644
--- a/lib/travis/yml/config.rb
+++ b/lib/travis/yml/config.rb
@@ -4,16 +4,34 @@
 module Travis
   module Yml
     class Config < Travis::Config
+      class << self
+        def auth_keys
+          ENV['TRAVIS_AUTH_KEYS'].split(',') || ['abc123']
+        end
+
+        def auth_internal
+          ENV['TRAVIS_AUTH_INTERNAL'] || 'token'
+        end
+
+        def travis_token
+          ENV['TRAVIS_TOKEN'] || 'token'
+        end
+
+        def vcs_token
+          ENV['TRAVIS_VCS_TOKEN'] || 'token'
+        end
+      end
+
       define enterprise: false,
-             auth_keys:  ['abc123'],
-             auth:       { internal: 'token' },
+             auth_keys:  auth_keys,
+             auth:       { internal: auth_internal },
              oauth2:     {},
              github:     { url: 'https://api.github.com', ssl: {} },
-             travis:     { url: 'https://api.travis-ci.com', app: 'yml', token: 'token', ssl: {} },
+             travis:     { url: 'https://api.travis-ci.com', app: 'yml', token: travis_token, ssl: {} },
              metrics:    { reporter: 'librato' },
              imports:    { max: 25 },
              ssl:        {},
-             vcs:        { url: 'https://vcs.travis-ci.com', token: 'token' },
+             vcs:        { url: 'https://vcs.travis-ci.com', token: vcs_token },
              log_level:  ENV.fetch("LOG_LEVEL", Logger::WARN)
 
       def metrics