diff --git a/doc/requirements.txt b/doc/requirements.txt
index f0dd419f..d5c05abc 100644
--- a/doc/requirements.txt
+++ b/doc/requirements.txt
@@ -1,4 +1,4 @@
 numpy
 matplotlib
-pydata-sphinx-theme
+pydata-sphinx-theme<=0.8.0
 sphinx>2
diff --git a/setup.py b/setup.py
index d079f9d8..3351e2fc 100644
--- a/setup.py
+++ b/setup.py
@@ -43,7 +43,7 @@ def read(fname):
     author_email="pav@iki.fi",
     url="https://numpydoc.readthedocs.io",
     license="BSD",
-    install_requires=["sphinx >= 1.8", 'Jinja2>=2.10'],
+    install_requires=["sphinx>=1.8", 'Jinja2>=2.10,<3.1'],
     python_requires=">=3.7",
     extras_require={
         "testing": [