diff --git a/mkdocs/requirements.txt b/mkdocs/requirements.txt
index 1970147..10cfc79 100644
--- a/mkdocs/requirements.txt
+++ b/mkdocs/requirements.txt
@@ -1,4 +1,5 @@
 mkdocs==1.1.0
+jinja2==3.0.3
 mkdocs-literate-nav
 mkdocs-section-index
 mkdocs-include-markdown-plugin