diff --git a/.gitignore b/.gitignore
index 2418788..7da19a1 100644
--- a/.gitignore
+++ b/.gitignore
@@ -122,4 +122,7 @@ website/web/static/d3*.js
 # Same got bootstrap-select
 website/web/static/bootstrap-select*
 
+# Session key
+website/secret_key
+
 *.swp
diff --git a/README.md b/README.md
index 9b1ece3..a5d3ed2 100644
--- a/README.md
+++ b/README.md
@@ -12,7 +12,7 @@ New version of BGP Ranking, complete rewrite in python3.6+ and an ARDB backend
 ```bash
 git clone https://github.com/antirez/redis.git
 cd redis
-git checkout 4.0
+git checkout 5.0
 make
 make test
 cd ..
@@ -23,11 +23,11 @@ cd ..
 ```bash
 git clone https://github.com/yinqiwen/ardb.git
 cd ardb
-make
+DISABLE_WARNING_AS_ERROR=1 make  # ardb (more precisely rocksdb) doesn't compile on ubuntu 18.04 unless you disable warning as error
 cd ..
 ```
 
-## Install BGP Ranking
+## Install & run BGP Ranking
 
 ```bash
 git clone https://github.com/D4-project/BGP-Ranking.git
@@ -41,6 +41,12 @@ start.py
 start_website.py
 ```
 
+## Shutdown BGP Ranking
+
+```bash
+stop.py
+```
+
 # Directory structure
 
 *Config files*: `bgpranking / config / *.json`
diff --git a/website/web/__init__.py b/website/web/__init__.py
index d21f5c4..2c83b92 100644
--- a/website/web/__init__.py
+++ b/website/web/__init__.py
@@ -7,6 +7,8 @@ try:
 except ImportError:
     import json
 
+import os
+
 import requests
 
 from flask import Flask, render_template, request, session, Response, redirect, url_for
@@ -14,14 +16,21 @@ from flask_bootstrap import Bootstrap
 
 from bgpranking.querying import Querying
 from bgpranking.libs.exceptions import MissingConfigEntry
-from bgpranking.libs.helpers import load_general_config
+from bgpranking.libs.helpers import load_general_config, get_homedir
 from datetime import date, timedelta
 import pycountry
 from collections import defaultdict
 
 app = Flask(__name__)
 
-app.secret_key = '\xeb\xfd\x1b\xee\xed<\xa5~\xd5H\x85\x00\xa5r\xae\x80t5@\xa2&>\x03S'
+secret_file_path = get_homedir() / 'website' / 'secret_key'
+
+if not secret_file_path.exists() or secret_file_path.stat().st_size < 64:
+    with open(secret_file_path, 'wb') as f:
+        f.write(os.urandom(64))
+
+with open(secret_file_path, 'rb') as f:
+    app.config['SECRET_KEY'] = f.read()
 
 Bootstrap(app)
 app.config['BOOTSTRAP_SERVE_LOCAL'] = True