diff --git a/.github/workflows/ci-cd.yml b/.github/workflows/ci-cd.yml
index 01f97b6e..4053af65 100644
--- a/.github/workflows/ci-cd.yml
+++ b/.github/workflows/ci-cd.yml
@@ -37,52 +37,9 @@ jobs:
       fail-fast: false
       matrix:
         os:
-          - macos-11
-          - macos-12
-          - macos-latest
-          - ubuntu-20.04
-          - ubuntu-22.04
           - ubuntu-latest
-          - windows-2019
-          - windows-2022
-          - windows-latest
         python-version: ["3.8"]
 
-        include:
-          - os: macos-latest
-            python-version: "3.11"
-          - os: ubuntu-latest
-            python-version: "3.11"
-          # installing lxml fails for Python 3.11 on Windows
-
-          - os: macos-latest
-            python-version: "3.10"
-          - os: ubuntu-latest
-            python-version: "3.10"
-          - os: windows-latest
-            python-version: "3.10"
-
-          - os: macos-latest
-            python-version: "3.9"
-          - os: ubuntu-latest
-            python-version: "3.9"
-          - os: windows-latest
-            python-version: "3.9"
-
-          - os: macos-latest
-            python-version: "3.7"
-          - os: ubuntu-latest
-            python-version: "3.7"
-          - os: windows-latest
-            python-version: "3.7"
-
-          - os: macos-latest
-            python-version: "3.6"
-          - os: ubuntu-20.04
-            python-version: "3.6"
-          - os: windows-latest
-            python-version: "3.6"
-
     steps:
       - name: Setup Ubuntu
         if: startsWith(matrix.os, 'ubuntu')