diff --git a/requirements/production.txt b/requirements/production.txt
index ed06d683f..4cd17aabd 100644
--- a/requirements/production.txt
+++ b/requirements/production.txt
@@ -8,6 +8,7 @@ daphne>=2.2,<2.5
 Django>=2.1,<2.3
 djangorestframework>=3.9.4,<3.10
 jsonfield2>=3.0,<3.1
+attrs>=19.2.0
 jsonschema>=3.0,<3.1
 lz4>=2.1.6
 mypy_extensions>=0.4,<0.5
@@ -16,4 +17,4 @@ roman>=2.0,<3.2
 setuptools>=29.0,<42.0
 typing_extensions>=3.6.6,<3.8
 websockets>=8.0,<9.0
-twisted>=19.0,<20.0
+twisted>=20.3.0