Major League Baseball is putting new rules in place this season to guard against high-tech sign stealing, a source told ESPN's Jeff Passan, confirming an SI.com report.

After several incidents of alleged stealing of catchers' signs last season, including during the postseason, commissioner Rob Manfred had promised to have new directives in place this year to curtail the practice.

MLB already had a rule in place that prohibited sign stealing from any place other than a runner on second base. That rule would now be updated to include measures that address the use of new technology to gain an advantage on opponents.