diff --git a/bitcoin/requirements.txt b/bitcoin/requirements.txt
index 55c1eaa..dc4464b 100644
--- a/bitcoin/requirements.txt
+++ b/bitcoin/requirements.txt
@@ -17,7 +17,7 @@ ipython==6.5.0
 ipython-genutils==0.2.0
 ipywidgets==7.4.2
 jedi==0.12.1
-Jinja2==2.10
+Jinja2==2.11.3
 jsonschema==2.6.0
 jupyter==1.0.0
 jupyter-client==5.2.3