diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index fa580dce..bdc263d4 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -32,7 +32,7 @@ jobs:
 
       - name: Downgrade Jinja2 for sphinx<4
         if: ${{ matrix.sphinx-version }} == 'sphinx<4.0.2'
-        run: python -m pip install jinja2==3.0.3
+        run: python -m pip install jinja2==3.0.3 markupsafe==2.0.1 pydata-sphinx-theme==0.8.0
 
       - name: Install
         run: |
diff --git a/doc/requirements.txt b/doc/requirements.txt
index 84b1eb8f..bff4625d 100644
--- a/doc/requirements.txt
+++ b/doc/requirements.txt
@@ -1,4 +1,4 @@
 numpy
 matplotlib
-pydata-sphinx-theme<=0.8.0
-sphinx>3
+pydata-sphinx-theme
+sphinx