diff --git a/Chapter11/app/requirements.txt b/Chapter11/app/requirements.txt
index 5b5a84c..f10f0a7 100644
--- a/Chapter11/app/requirements.txt
+++ b/Chapter11/app/requirements.txt
@@ -107,7 +107,7 @@ tox==3.7.0
 tqdm==4.28.1
 traitlets==4.3.2
 twine==1.13.0
-Twisted==18.9.0
+Twisted==22.10.0
 unicodecsv==0.14.1
 uritemplate==3.0.0
 urllib3==1.24.1