diff --git a/.github/workflows/build_docs.yml b/.github/workflows/build_docs.yml
index 145accc..602aa74 100644
--- a/.github/workflows/build_docs.yml
+++ b/.github/workflows/build_docs.yml
@@ -24,6 +24,7 @@ jobs:
         run: |
           python -m pip install --upgrade pip
           pip install -e .[doc]
+          pip install -e .[extras]
           pip install pymatreader
 
       - name: Build documentation