diff --git a/tools/viewer/requirements.txt b/tools/viewer/requirements.txt
index ef01b6f..af55255 100644
--- a/tools/viewer/requirements.txt
+++ b/tools/viewer/requirements.txt
@@ -16,7 +16,7 @@ itsdangerous==2.1.2
     # via flask
 jaraco-functools==3.0.1
     # via cheroot
-jinja2==3.1.3
+jinja2==3.1.4
     # via flask
 markupsafe==2.1.2
     # via