Fix `graphviz` installation on TravisCI

1 files changed, 3 insertions, 1 deletions

diff --git a/Rakefile b/Rakefile
index 35f0eff074..bfaf1d964d 100644
--- a/Rakefile
+++ b/Rakefile
@@ -63,10 +63,12 @@ namespace :spec do
       system "sudo sed -i 's/1000::/1000:Travis:/g' /etc/passwd"
       # Strip secure_path so that RVM paths transmit through sudo -E
       system "sudo sed -i '/secure_path/d' /etc/sudoers"
+      # Refresh packages index that the ones we need can be installed
+      sh "sudo apt-get update"
       # Install groff so ronn can generate man/help pages
       sh "sudo apt-get install groff-base -y"
       # Install graphviz so that the viz specs can run
-      sh "sudo apt-get install graphviz -y 2>&1 | tail -n 2"
+      sh "sudo apt-get install graphviz -y"
 
       # Install the gems with a consistent version of RubyGems
       sh "gem update --system 3.0.3"