diff --git a/README.md b/README.md
index 9fb7785c..7de85898 100644
--- a/README.md
+++ b/README.md
@@ -18,6 +18,11 @@ number of ways depending on your needs. You can edit your wiki locally:
 Gollum follows the rules of [Semantic Versioning](http://semver.org/) and uses
 [TomDoc](http://tomdoc.org/) for inline documentation.
 
+## SYSTEM REQUIREMENTS
+- Python 2.5 or greater (for pygments.rb)
+- Ruby 1.8.7 or 1.9.3
+- Unix like operating system (OS X, Ubuntu, Debian, and more)
+- Will not work on Windows (because of grit)
 
 ## INSTALLATION