+SPDX-License-Identifier: CC-BY-SA-3.0
+{% endcomment %}
+
+Ruby 2.5 or newer is required.
+
+* "Option 1: Install from packages":#packages
+* "Option 2: Install with RVM":#rvm
+* "Option 3: Install from source":#fromsource
+
+h2(#packages). Option 1: Install from packages
+
+{% include 'notebox_begin' %}
+Future versions of Arvados may require a newer version of Ruby than is packaged with your OS. Using OS packages simplifies initial install, but may complicate upgrades that rely on a newer Ruby. If this is a concern, we recommend using "RVM":#rvm.
+{% include 'notebox_end' %}
+
+h3. Centos 7
+
+The Ruby version shipped with Centos 7 is too old. Use "RVM":#rvm to install Ruby 2.5 or later.
+
+h3. Debian and Ubuntu
+
+Debian 10 (buster) and Ubuntu 18.04 (bionic) and later ship with Ruby 2.5 or newer, which is sufficient for Arvados.