diff --git a/requirements-dev.txt b/requirements-dev.txt
index 714a111100..02c51484f6 100644
--- a/requirements-dev.txt
+++ b/requirements-dev.txt
@@ -20,3 +20,5 @@ nbsphinx
 qiskit_sphinx_theme
 networkx>=2.2,<2.6
 types-dataclasses; python_version < '3.7'
+# Jinja2 3.1.0 breaks docs. Keep until nbconvert or Jinja2 fixes it.
+jinja2<3.1.0