diff --git a/setup.py b/setup.py
index 65afca59..b30a8aef 100644
--- a/setup.py
+++ b/setup.py
@@ -44,9 +44,8 @@ install_requires = [
     'python-potr',
     'pyxdg',
     'sat_tmp >= 0.7.0a4',
-    'service_identity',
     'shortuuid',
-    'twisted >= 15.2.0',
+    'twisted[tls] >= 15.2.0',
     'urwid >= 1.2.0',
     'urwid-satext >= 0.7.0a2',
     'wokkel >= 0.7.1',