diff --git a/.github/workflows/action_build.yml b/.github/workflows/action_build.yml
index 733be667..3673999d 100644
--- a/.github/workflows/action_build.yml
+++ b/.github/workflows/action_build.yml
@@ -9,7 +9,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        python-version: [3.8,3.9]
+        python-version: [3.9]
     steps:
     - uses: actions/checkout@v2
     - name: Setup Python ${{ matrix.python-version }}