diff --git a/command-signatures/json/gt.json b/command-signatures/json/gt.json
index cf0f6e77..3b7bc986 100644
--- a/command-signatures/json/gt.json
+++ b/command-signatures/json/gt.json
@@ -586,6 +586,20 @@
           "args": { "name": "steps", "default": "1" }
         }
       ]
+    },
+    {
+      "name": "ss",
+      "description": "Default alias for 'submit --stack', submit your changes across all PRs on a stack"
+    },
+    {
+      "name": "undo",
+      "description": "Undo the most recent Graphite mutations",
+      "options": [
+        {
+          "name": ["--force", "-f"],
+          "description": "Do not prompt for confirmation; undo the most recent command immediately"
+        }
+      ]
     }
   ],
   "options": [