diff --git a/docs/requirements.txt b/docs/requirements.txt
index 09df75ff..e95b9f74 100644
--- a/docs/requirements.txt
+++ b/docs/requirements.txt
@@ -1,4 +1,5 @@
 sphinx==3.4.3
 sphinx_rtd_theme==0.5.1
 readthedocs-sphinx-search==0.1.0
-docutils==0.16
\ No newline at end of file
+docutils==0.16
+jinja2<3.1