diff --git a/.github/workflows/gh-pages.yml b/.github/workflows/gh-pages.yml
index 54491b8b..c6caeb7a 100644
--- a/.github/workflows/gh-pages.yml
+++ b/.github/workflows/gh-pages.yml
@@ -18,6 +18,11 @@ jobs:
       with:
         python-version: 3.8
 
+    - name: Install tox 🧰
+      run: |
+        python -m pip install --upgrade pip
+        python -m pip install tox
+
     - name: Generate HTML 🛠
       run: tox -e docs