diff --git a/Python/stress-testing/README.md b/Python/stress-testing/README.md
index 063e53c04e2aa8a553eaad369009b450da371184..da3086406791f98095d5d2a2c6971c9c6aebb947 100644
--- a/Python/stress-testing/README.md
+++ b/Python/stress-testing/README.md
@@ -2,7 +2,15 @@
 
 Tool to stress test Notification service.
 
-Steps:
+### Prerequisites for LXPLUS usage
+Install a local auth-get-sso-cookie compatible with python3
+```
+git clone https://gitlab.cern.ch/authzsvc/tools/auth-get-sso-cookie.git
+cd auth-get-sso-cookie
+python3 setup.py install --user
+```
+
+### Steps
 - Needs https://gitlab.cern.ch/authzsvc/tools/auth-get-sso-cookie/
     - Works on LXPLUS for example
 - kinit