Lasse Vibe believes Derby have 'got back on their feet' after the appointment of Gary Rowett at the iPro Stadium.
The Rams have had a disappointing season by their expectations going into the campaign and the new boss, who was harshly sacked by Birmingham, has overseen an improvement in form.
They have beaten Brentford's west London rivals QPR and Fulham in recent weeks and, although the play-offs seem beyond their capabilities this season, hopes will be high for next season.
The Dane said: “Derby seem as if they've got back on their feet after the new manager has come in.
“We need to keep on working on the things we've done and maintain our performances at Griffin Park.”
Brentford haven't beaten Derby in their last three meetings in the league, drawing 0-0 at the iPro Stadium earlier this season.