diff --git a/bin/dynamo-archive.js b/bin/dynamo-archive.js
index 3b24de0..4ba52a3 100755
--- a/bin/dynamo-archive.js
+++ b/bin/dynamo-archive.js
@@ -19,9 +19,9 @@ var sleep = require('sleep');
 
 var argv = utils.config({
     demand: ['table'],
-    optional: ['rate', 'query', 'key', 'secret', 'region'],
+    optional: ['rate', 'query', 'key', 'secret', 'region', 'session'],
     usage: 'Archives Dynamo DB table to standard output in JSON\n' +
-           'Usage: dynamo-archive --table my-table [--rate 100] [--query "{}"] [--region us-east-1] [--key AK...AA] [--secret 7a...IG]'
+           'Usage: dynamo-archive --table my-table [--rate 100] [--query "{}"] [--region us-east-1] [--key AK...AA] [--secret 7a...IG] [--session AA-ZZ]'
 });
 
 var dynamo = utils.dynamo(argv);
diff --git a/bin/dynamo-restore.js b/bin/dynamo-restore.js
index 25859e0..ab978ff 100755
--- a/bin/dynamo-restore.js
+++ b/bin/dynamo-restore.js
@@ -20,9 +20,9 @@ var sleep = require('sleep');
 
 var argv = utils.config({
     demand: ['table'],
-    optional: ['rate', 'key', 'secret', 'region'],
+    optional: ['rate', 'key', 'secret', 'region', 'session'],
     usage: 'Restores Dynamo DB table from JSON file\n' +
-           'Usage: dynamo-archive --table my-table [--rate 100] [--region us-east-1] [--key AK...AA] [--secret 7a...IG]'
+           'Usage: dynamo-archive --table my-table [--rate 100] [--region us-east-1] [--key AK...AA] [--secret 7a...IG] [--session AA..ZZ]'
 });
 
 var dynamo = utils.dynamo(argv);