error message

> install.packages("dplyr")
also installing the dependency ‘DBI’

trying URL 'https://cran.rstudio.com/bin/macosx/mavericks/contrib/3.3/DBI_0.5-1.tgz'
Content type 'application/x-gzip' length 353669 bytes (345 KB)
==================================================
downloaded 345 KB

trying URL 'https://cran.rstudio.com/bin/macosx/mavericks/contrib/3.3/dplyr_0.5.0.tgz'
Content type 'application/x-gzip' length 4841443 bytes (4.6 MB)
====================================
downloaded 3.3 MB

Warning in install.packages :
  downloaded length 3505451 != reported length 4841443
Warning in install.packages :
  URL 'https://cran.rstudio.com/bin/macosx/mavericks/contrib/3.3/dplyr_0.5.0.tgz': status was 'Failure when receiving data from the peer'
Error in download.file(url, destfile, method, mode = "wb", ...) : 
  cannot download all files
Warning in install.packages :
  download of package ‘dplyr’ failed