diff --git a/lib/manager/bundler/artifacts.js b/lib/manager/bundler/artifacts.js
index 8b2dfdec45f374c0f32cdc513c40ce921f5aa89b..d887c0ae96dbba99ebe6245e1e61b281e922837f 100644
--- a/lib/manager/bundler/artifacts.js
+++ b/lib/manager/bundler/artifacts.js
@@ -118,7 +118,7 @@ async function getArtifacts(
       cmd += envVars.map(e => `-e ${e} `);
       cmd += `-w ${cwd} `;
       cmd += `renovate/ruby:${tag} bash -l -c "ruby --version && `;
-      cmd += 'gem install bundler' + bundlerVersion;
+      cmd += 'gem install bundler' + bundlerVersion + ' --no-document';
       cmd += ' && bundle';
     } else {
       logger.info('Running bundler via global bundler');