diff --git a/.github/workflows/test.yaml b/.github/workflows/test.yaml
index 96e8456c..bffca542 100644
--- a/.github/workflows/test.yaml
+++ b/.github/workflows/test.yaml
@@ -23,7 +23,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        python-version: [3.6] # [3.5, 3.6, 3.7, 3.8]
+        python-version: [3.9] # [3.5, 3.6, 3.7, 3.8]
 
     steps:
       - uses: actions/checkout@v2