The 38-year-old took to his Twitter page to shoot down the claims, which suggested that the 'I Got A Feeling' hitmakers were looking for a new female, reported Contactmusic.
"The rumours on Fergie being replaced are so false... It is the furthest from the truth Be4ever fergieRocks...Family (sic)," he wrote.
Fergie, 37, confirmed that she is expecting her first child with husband Josh Duhamel earlier this week.