Hart struggled in the Flyers net in March, prompting head coach Alain Vigneault to announce on Monday that his netminder would be given a two-game break to work on his game.
"He needs to work harder, he needs to work better," Vigneault said of Hart, according to NHL.com's Adam Kimelman. "I've had a good conversation with him ... about my expectations, about his practice habits and him stopping the puck."
The third-year netminder posted a .815 save percentage and a 2-6-0 record in March while the Flyers as a team gave up an NHL-worst 4.41 goals-against average per game during the month.
Brian Elliott started in Hart's place this week as the Flyers split a two-game series with the Buffalo Sabres.