Merge commit '03619324f' into dinsic

* commit '03619324f':
  Create a ListenerConfig object (#7681)
  Fix changelog wording
  1.15.1
  Wrap register_device coroutine in an ensureDeferred (#7684)
  Ensure the body is a string before comparing push rules. (#7701)
  Ensure etag is a string for GET room_keys/version response (#7691)
  Update m.id.phone to use 'phone' instead of 'number' (#7687)
  Fix "There was no active span when trying to log." error (#7698)
  Enable 3PID add/bind/unbind endpoints on r0 routes
  Discard RDATA from already seen positions. (#7648)
  Replace iteritems/itervalues/iterkeys with native versions. (#7692)
  Fix warnings about losing log context during UI auth. (#7688)
  Fix a typo when comparing the URI & method during UI Auth. (#7689)
  Remove "user_id" from GET /presence. (#7606)
  Increase the default SAML session expirary time to 15 minutes. (#7664)
  fix typo in sample_config.yaml (#7652)
  Take out a lock before modifying _CACHES (#7663)
  Add option to enable encryption by default for new rooms (#7639)
  Clean-up the fallback login code. (#7657)

1 files changed, 2 insertions, 3 deletions

diff --git a/synapse/python_dependencies.py b/synapse/python_dependencies.py

index 8b4312e5a3..8ec1a619a2 100644
--- a/synapse/python_dependencies.py
+++ b/synapse/python_dependencies.py
@@ -68,9 +68,8 @@ REQUIREMENTS = [
     "phonenumbers>=8.2.0",
     "six>=1.10",
     "prometheus_client>=0.0.18,<0.8.0",
-    # we use attr.s(slots), which arrived in 16.0.0
-    # Twisted 18.7.0 requires attrs>=17.4.0
-    "attrs>=17.4.0",
+    # we use attr.validators.deep_iterable, which arrived in 19.1.0
+    "attrs>=19.1.0",
     "netaddr>=0.7.18",
     "Jinja2>=2.9",
     "bleach>=1.4.3",