diff --git a/.github/workflows/testing.yml b/.github/workflows/testing.yml
index 5694892..003f12e 100644
--- a/.github/workflows/testing.yml
+++ b/.github/workflows/testing.yml
@@ -23,7 +23,7 @@ jobs:
     strategy:
       matrix:
         os: [ubuntu-latest]
-        python-version: [2.7, 3.5, 3.6, 3.7, 3.8, pypy2, pypy3]
+        python-version: [2.7, 3.5, 3.6, 3.7, 3.8, 3.9, pypy2, pypy3]
     steps:
       - uses: actions/checkout@v2
       - name: Set up Python Env