diff --git a/setup.py b/setup.py
index 92c87c9..6ea23a0 100644
--- a/setup.py
+++ b/setup.py
@@ -18,7 +18,8 @@ setup(name="magic-wormhole-transit-relay",
                 ],
       package_data={"wormhole_transit_relay": ["db-schemas/*.sql"]},
       install_requires=[
-          "twisted >= 17.5.0",
+          "twisted >= 21.2.1",
+          "autobahn >= 21.3.1",
       ],
       extras_require={
           ':sys_platform=="win32"': ["pypiwin32"],