Manager Frank Lampard is keen not to get carried away following the 2-0 victory over Bristol City on Saturday - and has called for focus from his players heading into the final two games of the season.
The Rams sit level on points with Middlesbrough, who occupy seventh position, but have played a game less than their play-off chasing rivals.
Derby travel to the Liberty Stadium on Wednesday night to face Swansea City and know a victory will put them three points ahead of Boro with a much better goal difference.
With their fate in their own hands, the manager wants everyone to remain focused heading into the midweek fixture against the Swans.
“Swansea is one of the hardest places to go at the minute and they are playing really good football,” he told RamsTV. “They have been on a push to get into the play-offs.
“I expected Middlesbrough to win on Saturday and we should expect them to win on Sunday in their final game too and that means we need to pick up four points out of these last two games.
“We can enjoy the moment, but the focus has to jump straight to Wednesday. We prepare and focus. The training won’t be much in a physical sense because it’s hard.
“The players are giving every ounce so we will rest on Sunday and the ones that are playing lots of minutes, we will just upkeep.
“We will show them video analysis and we might work on a few elements of our game but it’s all about mental focus and attention to detail.
“They have given me everything in these last two games, they have been great."