diff --git a/.github/workflows/pytest.yml b/.github/workflows/pytest.yml
index bdf03a8..ff50a69 100644
--- a/.github/workflows/pytest.yml
+++ b/.github/workflows/pytest.yml
@@ -6,7 +6,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        python-version: [3.8.12, 3.9.10]
+        python-version: [3.8.10, 3.9.9]
         poetry-version: [1.1.12]
         os: [ubuntu-18.04, macos-latest, windows-latest]
     runs-on: ${{ matrix.os }}