diff --git a/docs_theme/requirements.txt b/docs_theme/requirements.txt
index fe9469e7..13b403a4 100644
--- a/docs_theme/requirements.txt
+++ b/docs_theme/requirements.txt
@@ -1 +1,2 @@
 mkdocs==1.2.3
+jinja<3.1.0 # https://github.com/readthedocs/readthedocs.org/issues/9037