Hi, When I am trying to install specific version of R , using apt-get -y --force-yes install r-base=3.2.1-4precise0 r-recommended=3.2.1-4precise0 r-base-dev=3.2.1-4precise0, I do see correct version being set up in in the logs , but the installed version shows me 3.2.4. Is there anything else to be done to install specific version? $version.string [1] "R version 3.2.4 Revised (2016-03-16 r70336)" Setting up r-recommended (3.2.1-4precise0) ... Setting up r-base (3.2.1-4precise0) ... Setting up liblzma-dev (5.1.1alpha+20110809-3) ... Setting up r-doc-html (3.2.4-revised-1precise0) ... Setting up x11-xserver-utils (7.6+3) ... Setting up xbitmaps (1.1.1-1) ... Setting up xterm (271-1ubuntu2.1) ... update-alternatives: using /usr/bin/xterm to provide /usr/bin/x-terminal-emulator (x-terminal-emulator) in auto mode. update-alternatives: using /usr/bin/uxterm to provide /usr/bin/x-terminal-emulator (x-terminal-emulator) in auto mode. update-alternatives: using /usr/bin/lxterm to provide /usr/bin/x-terminal-emulator (x-terminal-emulator) in auto mode. Setting up r-base-html (3.2.4-revised-1precise0) ... Setting up libstdc++6-4.6-dev (4.6.3-1ubuntu5) ... Setting up g++-4.6 (4.6.3-1ubuntu5) ... Setting up g++ (4:4.6.3-1ubuntu5) ... update-alternatives: using /usr/bin/g++ to provide /usr/bin/c++ (c++) in auto mode. Setting up build-essential (11.5ubuntu2.1) ... Setting up libwww-perl (6.03-1) ... Setting up libxml-parser-perl (2.41-1build1) ... Setting up intltool (0.50.2-2) ... Setting up dh-translations (116) ... Setting up cdbs (0.4.100ubuntu2) ... Setting up r-base-dev (3.2.1-4precise0) ... Setting up liblwp-protocol-https-perl (6.02-1) ... Thanks! Sandhya [[alternative HTML version deleted]]