diff --git a/flaschengeist/plugins/auth/__init__.py b/flaschengeist/plugins/auth/__init__.py
index 593a160..b65dc87 100644
--- a/flaschengeist/plugins/auth/__init__.py
+++ b/flaschengeist/plugins/auth/__init__.py
@@ -25,7 +25,7 @@ def login():
 
     Route: ``/auth`` | Method: ``POST``
 
-    POST-data: {'userid': string, 'password': string}
+    POST-data: ``{userid: string, password: string}``
 
     Returns:
         A JSON object with `flaschengeist.models.user.User` and created
diff --git a/setup.py b/setup.py
index 3111e62..c6c3874 100644
--- a/setup.py
+++ b/setup.py
@@ -10,6 +10,7 @@ setup(
     packages=find_packages(),
     package_data={"": ["*.toml"]},
     scripts=["run_flaschengeist"],
+    python_requires=">=3.6",
     install_requires=[
         "Flask >= 1.1",
         "toml",
@@ -18,17 +19,22 @@ setup(
         "flask_cors",
         "werkzeug",
         "python-dateutil",
+        # Needed for python < 3.7
+        "backports-datetime-fromisoformat",
     ],
     extras_require={"ldap": ["flask_ldapconn", "ldap3"], "bjoern": ["bjoern"]},
     entry_points={
         "flaschengeist.plugin": [
+            # Authentication providers
+            "auth_plain = flaschengeist.plugins.auth_plain:AuthPlain",
+            "auth_ldap = flaschengeist.plugins.auth_ldap:AuthLDAP [ldap]",
+            # Route providers (and misc)
             "auth = flaschengeist.plugins.auth:AuthRoutePlugin",
             "users = flaschengeist.plugins.users:UsersPlugin",
             "roles = flaschengeist.plugins.roles:RolesPlugin",
+            "balance = flaschengeist.plugins.balance:BalancePlugin",
             "schedule = flaschengeist.plugins.schedule:SchedulePlugin",
             "mail = flaschengeist.plugins.message_mail:MailMessagePlugin",
-            "auth_plain = flaschengeist.plugins.auth_plain:AuthPlain",
-            "auth_ldap = flaschengeist.plugins.auth_ldap:AuthLDAP [ldap]",
         ],
     },
 )