The USCIS rule increasing the premium processing fee for Form I-129 and Form I-140 from $1,410 to $1,440 took effect on December 2, 2019. The increase was necessary, according to USCIS, to reflect the full amount of inflation. USCIS last increased the premium processing fee in 2018.

Details: https://www.uscis.gov/news/news-releases/uscis-adjusting-premium-processing-fee-0