diff --git a/.github/workflows/py3-workflow.yml b/.github/workflows/py3-workflow.yml
index 89243c3..7b0eaad 100644
--- a/.github/workflows/py3-workflow.yml
+++ b/.github/workflows/py3-workflow.yml
@@ -20,5 +20,7 @@ jobs:
 
     steps:
     - uses: actions/checkout@v2
+    - name: Install tox
+      run: pip install tox
     - name: Run python tests
       run: cd src/python_module/test && tox