diff --git a/requirements-py3.txt b/requirements-py3.txt
index cc0a7f644..2aae3ae65 100644
--- a/requirements-py3.txt
+++ b/requirements-py3.txt
@@ -1,4 +1,4 @@
-Twisted >= 15.5.0
+Twisted >= 17.9.0
 lxml>=3.2.4
 pyOpenSSL>=0.13.1
 cssselect>=0.9