diff --git a/README.md b/README.md
index 7db638c..b0249f1 100644
--- a/README.md
+++ b/README.md
@@ -16,7 +16,7 @@ Dependencies
 You will need to run debian wheezy with python 2.7 and debootstrap installed.
 Also the following python libraries are required:
 * boto
-* jsomschema
+* jsomschema (version 4, only available through pip)
 * termcolor
 
 Highlights