diff --git a/.github/workflows/publish.yaml b/.github/workflows/publish.yaml
index f7ab3a9..a163d23 100644
--- a/.github/workflows/publish.yaml
+++ b/.github/workflows/publish.yaml
@@ -25,6 +25,10 @@ jobs:
           pip freeze > requirements.txt
           pip install -r requirements.txt
           pip install pytest
+      - name: Set PYTHONPATH
+        run: echo "PYTHONPATH=$PYTHONPATH:$(pwd)/src" >> $GITHUB_ENV
+      - name: Install package in editable mode
+        run: pip install -e .
       - name: Run tests
         run: pytest