diff --git a/docs/install.rst b/docs/install.rst
index a1f242e..56843c4 100644
--- a/docs/install.rst
+++ b/docs/install.rst
@@ -6,10 +6,12 @@ Squib is a Ruby gem, and installation is handled like most gems.
 Pre-requisites
 --------------
 
-  * `Ruby 2.1+ <https://www.ruby-lang.org>`_
+  * `Ruby 2.4+ <https://www.ruby-lang.org>`_
 
 Squib works with both x86 and x86_64 versions of Ruby.
 
+On Windows, we recommend using `RubyInstaller <https://rubyinstaller.org/>`_. Use the version with DevKit.
+
 Typical Install
 ---------------