diff --git a/.python-version b/.python-version
index 424e1794..c77a7de8 100644
--- a/.python-version
+++ b/.python-version
@@ -1 +1 @@
-3.6.8
+3.7.9
diff --git a/requirements.txt b/requirements.txt
index 8be3282e..96261d0f 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,6 +1,7 @@
 astropy==3.2.2
 beautifulsoup4==4.6.0
 html5lib==1.0.1
+jinja2==3.0.3
 lxml==4.9.1
 mock==2.0.0
 numpy==1.15.4