diff --git a/.github/workflows/py3-workflow.yml b/.github/workflows/py3-workflow.yml
index f38d918..83c2afd 100644
--- a/.github/workflows/py3-workflow.yml
+++ b/.github/workflows/py3-workflow.yml
@@ -35,6 +35,7 @@ jobs:
         brew install pyenv
         pyenv install 3.7
         pyenv install 3.8
+        pyenv global 3.7 3.8
     - name: Set up Python
       uses: actions/setup-python@v2
       with: