diff --git a/.github/workflows/documentation.yaml b/.github/workflows/documentation.yaml
index 9930e73..a842fcf 100644
--- a/.github/workflows/documentation.yaml
+++ b/.github/workflows/documentation.yaml
@@ -10,7 +10,7 @@ jobs:
       - uses: actions/setup-python@v3
       - name: Install dependencies
         run: |
-          pip install sphinx sphinx_book_theme sphinx_favicon
+          pip install sphinx sphinx_book_theme sphinx_favicon sphinx_copybutton
           
       - name: Sphinx build
         run: |