City correction officers will now have their lunch bags X-rayed before starting their shifts.
Correction Commissioner Joseph Ponte issued a memo ordering guards to undergo the additional screening beginning Monday.
It's the same kind of procedure that's long been in place at City Hall and other sensitive locations.
Jail inspectors will look for drugs, knives and other contraband.
This new security measure comes after a dozen correction officers were arrested for smuggling drugs and other prohibited items into Rikers Island.
In a statement, the correction department said, "Jail safety is Commissioner Ponte's top priority. This policy complies with national best practice and is a practical, reasonable way to protect the safety of staff and inmates alike."