diff --git a/src/teams_bot/pyinfra.py b/src/teams_bot/pyinfra.py
index b2ab33b..4cec8b1 100644
--- a/src/teams_bot/pyinfra.py
+++ b/src/teams_bot/pyinfra.py
@@ -5,7 +5,13 @@ from pyinfra.operations import git, server, files, systemd
 
 
 def deploy_teams_bot(unix_user: str, bot_email: str, bot_passwd: str, dbdir: str = None):
-    """Deploy TeamsBot to a UNIX user"""
+    """Deploy TeamsBot to a UNIX user, with specified credentials
+
+    :param unix_user: the existing UNIX user of the bot
+    :param bot_email: the email address for the bot account
+    :param bot_passwd: the password for the bot's email account
+    :param dbdir: the directory where the bot's data will be stored. default: ~/.config/teams-bot/email@example.org
+    """
 
     clone_xdcget = git.repo(
         name="Pull the teams-bot repository",