diff --git a/docs/requirements.txt b/docs/requirements.txt
index 2dc8d31..1b71fb3 100644
--- a/docs/requirements.txt
+++ b/docs/requirements.txt
@@ -1,3 +1,4 @@
 sphinx==3.4.3
 sphinx_rtd_theme==1.0.0
 readthedocs-sphinx-search==0.1.0rc3
+jinja2<3.1.0
\ No newline at end of file