diff --git a/meta/argument_specs.yml b/meta/argument_specs.yml
index 192a27f1f162d3f12bf88c26ce603da72b3be56e..267bb5f0ec17b15942f9593ceac9e8f5ad16eb48 100644
--- a/meta/argument_specs.yml
+++ b/meta/argument_specs.yml
@@ -128,6 +128,10 @@ argument_specs:
           - SHOW VIEW
           - TRIGGER
           - UPDATE
+      mariadb_socket:
+        type: str
+        required: true
+        description: Path to the MariaDB socket.
       mariadb_systemd_units:
         type: list
         elements: dict