diff --git a/setup.cfg b/setup.cfg
index d3ed9288..39d19d7a 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -25,7 +25,8 @@ packages =
 [extras]
 fixtures =
   fixtures>=3.0.0 # Apache-2.0/BSD
-
+systemd =
+  systemd-python>=234  # LGPLv2+
 [entry_points]
 oslo.config.opts =
     oslo.log = oslo_log._options:list_opts