diff --git a/brightray/README.md b/brightray/README.md
index 725a4718af35..16569743d0c8 100644
--- a/brightray/README.md
+++ b/brightray/README.md
@@ -11,6 +11,15 @@ sample application written using Brightray.
 
 ## Development
 
+### Prerequisites
+
+* Python 2.7
+* gyp
+* Mac:
+    * Xcode
+* Windows:
+    * Visual Studio 2010 SP1
+
 ### One-time setup
 
 You must previously have built and uploaded libchromiumcontent using its