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-rw-r--r--synapse/python_dependencies.py11
1 files changed, 9 insertions, 2 deletions
diff --git a/synapse/python_dependencies.py b/synapse/python_dependencies.py
index 2fe790f95d..882e844eb1 100644
--- a/synapse/python_dependencies.py
+++ b/synapse/python_dependencies.py
@@ -40,7 +40,11 @@ REQUIREMENTS = [
     "signedjson>=1.0.0",
     "pynacl>=1.2.1",
     "service_identity>=16.0.0",
-    "Twisted>=17.1.0",
+
+    # our logcontext handling relies on the ability to cancel inlineCallbacks
+    # (https://twistedmatrix.com/trac/ticket/4632) which landed in Twisted 18.7.
+    "Twisted>=18.7.0",
+
     "treq>=15.1",
     # Twisted has required pyopenssl 16.0 since about Twisted 16.6.
     "pyopenssl>=16.0.0",
@@ -59,8 +63,11 @@ REQUIREMENTS = [
     # prometheus_client 0.4.0 changed the format of counter metrics
     # (cf https://github.com/matrix-org/synapse/issues/4001)
     "prometheus_client>=0.0.18,<0.4.0",
+
     # we use attr.s(slots), which arrived in 16.0.0
-    "attrs>=16.0.0",
+    # Twisted 18.7.0 requires attrs>=17.4.0
+    "attrs>=17.4.0",
+
     "netaddr>=0.7.18",
 ]