1 files changed, 1 insertions, 2 deletions
diff --git a/synapse/python_dependencies.py b/synapse/python_dependencies.py
index 8bd91d5f72..ec199a161d 100644
--- a/synapse/python_dependencies.py
+++ b/synapse/python_dependencies.py
@@ -50,12 +50,11 @@ REQUIREMENTS = [
     # we use the type definitions added in signedjson 1.1.
     "signedjson>=1.1.0",
     "pynacl>=1.2.1",
-    "idna>=2.5",
     # validating SSL certs for IP addresses requires service_identity 18.1.
     "service_identity>=18.1.0",
     # Twisted 18.9 introduces some logger improvements that the structured
     # logger utilises
-    "Twisted>=18.9.0",
+    "Twisted[tls]>=18.9.0",
     "treq>=15.1",
     # Twisted has required pyopenssl 16.0 since about Twisted 16.6.
     "pyopenssl>=16.0.0",