diff --git a/README.md b/README.md
index ded5276..11c4a17 100644
--- a/README.md
+++ b/README.md
@@ -2,3 +2,5 @@ Emails_SMS_Free_Mobile_API
 ==========================
 
 Receive your emails _via_ SMS with the Free Mobile API.
+
+Compatible python 2 and 3