diff --git a/groups/os/linux.py b/groups/os/linux.py
index 21f82a3..1f48308 100644
--- a/groups/os/linux.py
+++ b/groups/os/linux.py
@@ -51,9 +51,16 @@
                     'ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAILMVroYmswD4tLk6iH+2tvQiyaMe42yfONDsPDIdFv6I ckn',
                 },
             },
+            # agent sessions (ssh-grant): the key only works while a grant is active
+            'mwiegand-agent': {
+                'authorized_keys': {
+                    'ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIDeU8FKtjN1+VjhxKZTzyvJ51GzPevrScXgou08hFmjb mwiegand-agent',
+                },
+            },
         },
         'sudoers': {
             'ckn': {'ALL'},
+            'mwiegand-agent': {'ALL'},
         },
     },
 }