diff --git a/.github/workflows/actions.yml b/.github/workflows/actions.yml
index 1d596a89..2dd29f85 100644
--- a/.github/workflows/actions.yml
+++ b/.github/workflows/actions.yml
@@ -36,6 +36,7 @@ jobs:
 
       - name: pytest
         run: |
+          pip install matplotlib
           pip install pytest
           pytest