diff --git a/tmuxp/cli.py b/tmuxp/cli.py
index 9605e5d0eca..9a94b7466a9 100644
--- a/tmuxp/cli.py
+++ b/tmuxp/cli.py
@@ -559,6 +559,8 @@ def load_workspace(
         ``tmux -L <socket-name>``
     socket_path: str, optional
         ``tmux -S <socket-path>``
+    tmux_config_file: str, optional
+        ``tmux -f <config-file>``
     new_session_name: str, options
         ``tmux new -s <new_session_name>``
     colors : str, optional