diff --git a/.github/workflows/ubuntu.yml b/.github/workflows/ubuntu.yml
index 3ad145115e7..aea97c989fd 100644
--- a/.github/workflows/ubuntu.yml
+++ b/.github/workflows/ubuntu.yml
@@ -119,6 +119,7 @@ jobs:
         run: |
           python -m pip install --upgrade pip
           pip install -r .github/workflows/python_requirements.txt
+          pip install -r .github/workflows/optional_requirements.txt
 
       - name: Create installation directory
         run: |