diff --git a/basic/portal-app-manager.py b/basic/portal-app-manager.py
index 3e333f5..d25d991 100755
--- a/basic/portal-app-manager.py
+++ b/basic/portal-app-manager.py
@@ -17,6 +17,9 @@ def main(args):
         data[args.app]['login'] = args.login
     if args.password:
         data[args.app]['password'] = args.password
+    if args.property:
+        for key, value in args.property:
+            data[args.app][key] = value
     with open(jsonfile, 'w') as f:
         json.dump(data, f)
 
@@ -26,4 +29,5 @@ if __name__ == '__main__':
     parser.add_argument('url', nargs='?', help='URL to the application. Use "{host}" as a host placeholder.')
     parser.add_argument('login', nargs='?', help='Administrative login.')
     parser.add_argument('password', nargs='?', help='Administrative password.')
+    parser.add_argument('-p', '--property', nargs=2, action='append', help='Add arbitrary key-value to the application properties')
     main(parser.parse_args())