can't install "Epi" package under ubuntu 19.04 and using latest version of R-studio

[kkmstat05]

install.packages("Epi")
Installing package into ‘/home/krishna/R/x86_64-pc-linux-gnu-library/3.5’
(as ‘lib’ is unspecified)
Warning in install.packages :
dependency ‘cmprsk’ is not available
trying URL 'https://cloud.r-project.org/src/contrib/Epi_2.37.tar.gz'
Content type 'application/x-gzip' length 5537547 bytes (5.3 MB)

downloaded 5.3 MB

ERROR: dependency ‘cmprsk’ is not available for package ‘Epi’

• removing ‘/home/krishna/R/x86_64-pc-linux-gnu-library/3.5/Epi’
  Warning in install.packages :
  installation of package ‘Epi’ had non-zero exit status

The downloaded source packages are in
‘/tmp/RtmpkHYhuW/downloaded_packages’