diff --git a/.github/workflows/push_to_main.yml b/.github/workflows/push_to_main.yml
index 3acc0b3..5f7bc2d 100644
--- a/.github/workflows/push_to_main.yml
+++ b/.github/workflows/push_to_main.yml
@@ -35,7 +35,9 @@ jobs:
 
       - name: Run tests
         working-directory: ./tests
-        run: pytest
+        run: |
+          export PYTHONPATH="${PYTHONPATH}:$(dirname $(pwd))"
+          pytest
 
       - name: Build documentation with Sphinx
         run: |