diff --git a/dev/3.9/requirements.txt b/dev/3.9/requirements.txt
index 0397cde..a542ec5 100644
--- a/dev/3.9/requirements.txt
+++ b/dev/3.9/requirements.txt
@@ -12,7 +12,7 @@ entrypoints==0.3
     # via altair
 isodate==0.6.0
     # via timely-beliefs (setup.py)
-jinja2==3.1.4
+jinja2==3.1.5
     # via altair
 jsonschema==3.2.0
     # via altair