diff --git a/requirements.txt b/requirements.txt
index 29f7440f..a13ce137 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -11,7 +11,7 @@ ethereum==1.6.1
 ethereum-abi-utils==0.4.0
 ethereum-utils==0.3.2
 idna==2.5
-Jinja2==2.9.6
+Jinja2==2.11.3
 json-rpc==1.10.3
 jsonschema==2.6.0
 MarkupSafe==1.0