diff --git a/setup.py b/setup.py
index 675ca7ae..0c5ea83f 100755
--- a/setup.py
+++ b/setup.py
@@ -49,6 +49,7 @@ setup(name='jedi',
           ],
           'docs': [
               'sphinx<2',
+              'jinja2<3',
               'docutils<0.18',
           ],
       },