diff --git a/Chapter17/requirements.txt b/Chapter17/requirements.txt
index 2eeea20..16b8ae8 100644
--- a/Chapter17/requirements.txt
+++ b/Chapter17/requirements.txt
@@ -5,7 +5,7 @@ cycler==0.10.0
 dill==0.3.2
 fastapi==0.61.1
 h11==0.11.0
-Jinja2==2.11.2
+Jinja2==2.11.3
 kiwisolver==1.2.0
 loguru==0.5.3
 MarkupSafe==1.1.1