diff --git a/reference/requirements.txt b/reference/requirements.txt
index 600345d..8694670 100644
--- a/reference/requirements.txt
+++ b/reference/requirements.txt
@@ -1,4 +1,4 @@
-Jinja2==2.9.2
+Jinja2==2.11.3
 MarkupSafe==0.23
 pprintpp==0.3.0
 Pygments==2.1.3