diff --git a/si446x/setup.py b/si446x/setup.py
old mode 100755
new mode 100644
index 528971f..8982dcc
--- a/si446x/setup.py
+++ b/si446x/setup.py
@@ -41,7 +41,7 @@ def get_version():
     maintainer_email = 'cire831@gmail.com',
     install_requires = ['future',
                         'machinist',
-                        'twisted==13.1.0',
+                        'twisted==23.8.0',
                         'six',
                         'construct==2.5.2',
                         'txdbus==1.1.0',