The CBS broadcast network announced changes today to its prime-time lineup, with the adjustments to the Monday and Sunday night slates to take effect starting Monday, July 18.

“BrainDead” moves to Sundays (10-11 p.m. ET/PT) with original episodes starting July 24, replacing rebroadcasts of “Elementary.”

“Scorpion” will air Monday (9-10 p.m. ET/PT) on July 18 and July 25, leading into CBS News coverage of the Republican and Democratic National Conventions.

Effective Monday, Aug. 1, “Scorpion” moves to 10-11 p.m. ET/PT, following a two-hour comedy block from 8-10 p.m. ET/PT.

Here are the new lineups and key dates:

Monday, July 18

8:00-8:30 PM MOM

8:30-9:00 PM 2 BROKE GIRLS

9:00-10:00 PM SCORPION

10:00-11:00 PM CAMPAIGN 2016: REPUBLICAN CONVENTION

Sunday, Effective July 24

8:00-9:00 PM BIG BROTHER

9:00-10:00 PM MADAM SECRETARY

10:00-11:00 PM BRAINDEAD (New Time Period)

Monday, July 25

8:00-8:30 PM MOM

8:30-9:00 PM 2 BROKE GIRLS

9:00-10:00 PM SCORPION

10:00-11:00 PM CAMPAIGN 2016: DEMOCRATIC CONVENTION

Monday, Effective Aug. 1

8:00-8:30 PM MOM

8:30-9:00 PM 2 BROKE GIRLS

9:00-9:30 PM MOM

9:30-10:00 PM THE ODD COUPLE

10:00-11:00 PM SCORPION (New Time Period)