diff --git a/.github/workflows/python-package.yml b/.github/workflows/python-package.yml
index ff11691..04f1006 100644
--- a/.github/workflows/python-package.yml
+++ b/.github/workflows/python-package.yml
@@ -29,6 +29,7 @@ jobs:
         python -m pip install --upgrade pip
         python -m pip install flake8 nose pytest biopython
         if [ -f requirements.txt ]; then pip install -r requirements.txt; fi
+        python -m pip install .
     - name: Test with pytest
       run: |
         pytest tests/*