diff --git a/roles/systemd_hostnamed/meta/argument_specs.yml b/roles/systemd_hostnamed/meta/argument_specs.yml
new file mode 100644
index 0000000..a7ef898
--- /dev/null
+++ b/roles/systemd_hostnamed/meta/argument_specs.yml
@@ -0,0 +1,7 @@
+---
+argument_specs:
+  main:
+    options:
+      systemd_hostnamed_service_name:
+        required: true
+        type: str