diff --git a/requirements.txt b/requirements.txt
index c68e488..3426d69 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,3 +1,4 @@
+jinja2<3.1
 mkdocs
 mkdocs-material
-markdown-meta-extension
\ No newline at end of file
+markdown-meta-extension