diff --git a/lolcat/app/requirements.txt b/lolcat/app/requirements.txt
index a3157b0..6979246 100644
--- a/lolcat/app/requirements.txt
+++ b/lolcat/app/requirements.txt
@@ -7,7 +7,7 @@ decorator==4.4.0
 Flask==1.1.1
 idna==2.8
 itsdangerous==1.1.0
-Jinja2==2.10.1
+Jinja2==2.11.3
 MarkupSafe==1.1.1
 psutil==5.6.3
 requests==2.22.0