diff --git a/.github/workflows/test_bd.yml b/.github/workflows/test_bd.yml
index 9dcd7df8..13ef543f 100644
--- a/.github/workflows/test_bd.yml
+++ b/.github/workflows/test_bd.yml
@@ -13,10 +13,6 @@ on:
 jobs:
   build:
     runs-on: ubuntu-22.04
-    strategy:
-      matrix:
-        os: [ubuntu-20.04, ubuntu-22.04]
-      fail-fast: false
     steps:
       - uses: actions/checkout@v4
       - name: Set up Python 3.10