diff --git a/.github/workflows/ci-py-only.yml b/.github/workflows/ci-py-only.yml
index 8591d7b20c..6b13686022 100644
--- a/.github/workflows/ci-py-only.yml
+++ b/.github/workflows/ci-py-only.yml
@@ -88,6 +88,7 @@ jobs:
           sudo /usr/bin/python -m pip install networkx
           sudo /usr/bin/python -m pip install tabulate
           sudo /usr/bin/python -m pip install python-dateutil
+          sudo /usr/bin/python -m pip install mathutils
 
       - name: Test
         run: |