diff --git a/.github/workflows/sphinx.yml b/.github/workflows/sphinx.yml
index d1192f8..2cb5164 100644
--- a/.github/workflows/sphinx.yml
+++ b/.github/workflows/sphinx.yml
@@ -32,6 +32,7 @@ jobs:
         pip install nbsphinx
         pip install numpydoc
         pip install sphinx-rtd-theme
+        pip install sphinx-press-theme
 
     - uses: actions/checkout@master
     - uses: nikeee/setup-pandoc@v1