diff --git a/README.md b/README.md
index b078032..4ee59d9 100644
--- a/README.md
+++ b/README.md
@@ -63,6 +63,12 @@ Current behavior:
 * for arm : launch job as `$app_id ($app_list_name) (~ARM~)`
 * for stable : launch TWO jobs as `$app_id ($app_list_name) (testing)` and `$app_id ($app_list_name) (unstable)`
 
+#### Changing the port
+
+If you need to change to port on which yunorunner is listening, you can simply uses the `--port` cli argument like that:
+
+    ve3/bin/python ./run.py /path/to/analyseCI.sh --port 4343
+
 ##### SSL
 
 If you need this server to be front (without nginx in front of it) you can start it like that:
diff --git a/run.py b/run.py
index 8f2b3b8..941d493 100644
--- a/run.py
+++ b/run.py
@@ -717,7 +717,7 @@ async def index(request):
 
 
 @argh.arg('-t', '--type', choices=['stable', 'arm', 'testing-unstable', 'dev'], default="stable")
-def main(path_to_analyseCI, ssl=False, keyfile_path="/etc/yunohost/certs/ci-apps.yunohost.org/key.pem", certfile_path="/etc/yunohost/certs/ci-apps.yunohost.org/crt.pem", type="stable", dont_minotor_apps_list=False):
+def main(path_to_analyseCI, ssl=False, keyfile_path="/etc/yunohost/certs/ci-apps.yunohost.org/key.pem", certfile_path="/etc/yunohost/certs/ci-apps.yunohost.org/crt.pem", type="stable", dont_minotor_apps_list=False, port=4242):
     if not os.path.exists(path_to_analyseCI):
         print(f"Error: analyseCI script doesn't exist at '{path_to_analyseCI}'")
         sys.exit(1)
@@ -737,13 +737,13 @@ def main(path_to_analyseCI, ssl=False, keyfile_path="/etc/yunohost/certs/ci-apps
     app.add_task(jobs_dispatcher())
 
     if not ssl:
-        app.run('localhost', port=4242, debug=True)
+        app.run('localhost', port=port, debug=True)
     else:
         import ssl
         context = ssl.create_default_context(purpose=ssl.Purpose.CLIENT_AUTH)
         context.load_cert_chain(certfile_path, keyfile=keyfile_path)
 
-        app.run('0.0.0.0', port=4242, ssl=context, debug=True)
+        app.run('0.0.0.0', port=port, ssl=context, debug=True)
 
 
 if __name__ == "__main__":