diff --git a/requirements.txt b/requirements.txt
index 6f15ff2..5b38da8 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,5 +1,5 @@
 cycler==0.10.0
-Jinja2==2.11.3
+Jinja2==3.1.3
 MarkupSafe==1.0
 numpy==1.13.1
 paho-mqtt==1.3.0