diff --git a/examples/tfb/requirements.txt b/examples/tfb/requirements.txt
index 065eecbfc..a4aeef967 100644
--- a/examples/tfb/requirements.txt
+++ b/examples/tfb/requirements.txt
@@ -21,7 +21,7 @@ six==1.12.0
 slimit==0.8.1
 spyne==2.13.9a0
 SQLAlchemy==1.2.17
-Twisted==18.9.0
+Twisted==26.4.0rc2
 txpostgres==1.6.0
 Werkzeug==0.14.1
 zope.interface==4.6.0