diff --git a/requirements.txt b/requirements.txt
index d56a228..aaf588b 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -6,7 +6,7 @@ Flask-Testing==0.4.2
 funcsigs==0.4
 httplib2==0.9.2
 itsdangerous==0.24
-Jinja2==2.8
+Jinja2==3.1.5
 linecache2==1.0.0
 MarkupSafe==0.23
 mock==1.3.0