diff --git a/easyci2/flask/requirements.txt b/easyci2/flask/requirements.txt
index a5598aaf..195b0bbc 100644
--- a/easyci2/flask/requirements.txt
+++ b/easyci2/flask/requirements.txt
@@ -17,7 +17,7 @@ idna==2.8
 iniconfig==1.1.1
 ipaddr==2.2.0
 itsdangerous==1.1.0
-Jinja2==2.11.3
+Jinja2==3.1.6
 lockfile==0.12.2
 MarkupSafe==1.1.1
 msgpack==0.6.2