diff --git a/spcd/cmd.py b/spcd/cmd.py
index a72287b..02a2b49 100644
--- a/spcd/cmd.py
+++ b/spcd/cmd.py
@@ -32,7 +32,13 @@ def spcd_check_project() -> None:
 def spcd_synchronize(
     target: str | None = None, source: str | None = None
 ) -> None:
-    """Synchronize output towards a target."""
+    """Synchronize output towards a target.
+
+    :param target: where to deploy to
+    :type target: str | None
+    :param source: where to deploy from
+    :type source: str | None
+    """
     if not target:
         user = "cd"
         host = env.SPCD_PROJECT_PATH