diff --git a/README.rst b/README.rst
index 0c4ac7a..978e460 100644
--- a/README.rst
+++ b/README.rst
@@ -7,7 +7,7 @@ An installer which deploy a complete mail server based on Modoboa.
 
    This tool is still in beta stage, it has been tested on:
 
-   * Debian Jessie (8)
+   * Debian Jessie (8) and Stretch (9)
    * Ubuntu Trusty (14.04) and upper
    * CentOS 7