diff --git a/README.md b/README.md
--- a/README.md
+++ b/README.md
@@ -12,15 +12,22 @@
 
 ### Dependencies
 
-Python tests for this module include tests that cannot be run without
-a local Postgresql database, so you need the Postgresql server executable on
-your machine (no need to have a running Postgresql server). On a Debian-like
-host:
+Python tests for this module include tests that cannot be run without a local
+Postgresql database, so you need the Postgresql server executable on your
+machine (no need to have a running Postgresql server). They also expect a
+cassandra server.
+
+#### Debian-like host
 
 ```
-$ sudo apt install libpq-dev postgresql
+$ sudo apt install libpq-dev postgresql cassandra
 ```
 
+#### Non Debian-like host
+
+The tests expects:
+- `/usr/sbin/cassandra` to exist
+
 ### Installation
 
 It is strongly recommended to use a virtualenv. In the following, we