diff --git a/setup.py b/setup.py
index b669afc00..7ce37f9ea 100644
--- a/setup.py
+++ b/setup.py
@@ -21,7 +21,8 @@ install_requires = [
     'sphinxcontrib-htmlhelp',
     'sphinxcontrib-serializinghtml',
     'sphinxcontrib-qthelp',
-    'Jinja2>=2.3',
+    'Jinja2>=2.3,<3.0',
+    'MarkupSafe<2.0',
     'Pygments>=2.0',
     'docutils>=0.14,<0.18',
     'snowballstemmer>=1.1',