diff --git a/MANUAL.txt b/MANUAL.txt
index ae8ac1022..24d341685 100644
--- a/MANUAL.txt
+++ b/MANUAL.txt
@@ -1645,6 +1645,10 @@ stdin, and it can be an empty sequence `[]` for no input.
 | ```                              | ```                               |
 +----------------------------------+-----------------------------------+
 | ```                              | ``` yaml                          |
+| --sandbox                        | sandbox: true                     |
+| ```                              | ```                               |
++----------------------------------+-----------------------------------+
+| ```                              | ``` yaml                          |
 | --log=FILE                       | log-file: FILE                    |
 | ```                              | ```                               |
 +----------------------------------+-----------------------------------+