diff --git a/.github/workflows/pythonapp.yml b/.github/workflows/pythonapp.yml
index a87d7f28..185dccc0 100644
--- a/.github/workflows/pythonapp.yml
+++ b/.github/workflows/pythonapp.yml
@@ -26,5 +26,6 @@ jobs:
         flake8 . --count --exit-zero --max-complexity=10 --max-line-length=127 --statistics
     - name: Test with pytest
       run: |
+        apt install ffmpeg
         pip install pytest
         pytest