diff --git a/requirements.txt b/requirements.txt
index affe212..f7052ce 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -15,7 +15,7 @@ importlib-metadata==4.8.1
 ipython-genutils==0.2.0
 itsdangerous==2.0.1
 jdcal==1.4.1
-Jinja2==3.0.2
+Jinja2==2.11.3
 joblib==1.1.0
 jsonschema==4.1.0
 jupyter-core==4.8.1