Google appears to have updated the version of the chrome-binary-plugins (I could not determine the newest version to search for). >>> Emerging (2 of 56) www-plugins/chrome-binary-plugins-53.0.2785.34_beta::gentoo >>> Failed to emerge www-plugins/chrome-binary-plugins-53.0.2785.34_beta, Log file: >>> '/var/tmp/portage/www-plugins/chrome-binary-plugins-53.0.2785.34_beta/temp/build.log' >>> Jobs: 1 of 56 complete, 1 failed Load avg: 3.43, 2.22, 1.91 --2016-08-04 12:50:59-- https://dl.google.com/linux/chrome/deb/pool/main/g/google-chrome-beta/google-chrome-beta_53.0.2785.34-1_amd64.deb Resolving dl.google.com... 216.58.216.174, 2607:f8b0:400a:809::200e Connecting to dl.google.com|216.58.216.174|:443... connected. HTTP request sent, awaiting response... 404 Not Found 2016-08-04 12:50:59 ERROR 404: Not Found. !!! Couldn't download 'google-chrome-beta_53.0.2785.34-1_amd64.deb'. Aborting. * Fetch failed for 'www-plugins/chrome-binary-plugins-53.0.2785.34_beta', Log file: * '/var/tmp/portage/www-plugins/chrome-binary-plugins-53.0.2785.34_beta/temp/build.log' * Package: www-plugins/chrome-binary-plugins-53.0.2785.34_beta * Repository: gentoo * Maintainer: floppym@gentoo.org zx2c4@gentoo.org,chromium@gentoo.org * USE: abi_x86_64 amd64 elibc_glibc flash kernel_linux userland_GNU widevine * FEATURES: preserve-libs sandbox userpriv usersandbox * Please wait 24 hours and sync your portage tree before reporting fetch failures. As for Chromium, the beta version listed in http://mirror.retrosnub.co.uk/apt/googlechrome/pool/main/g/google-chrome-beta/ is: google-chrome-beta_53.0.2785.46-1_amd64.deb The error message mentioned: google-chrome-beta_53.0.2785.34-1_amd64.deb