diff --git a/.github/workflows/ci-testing.yml b/.github/workflows/ci-testing.yml
index eaa49c51..5f4f439c 100644
--- a/.github/workflows/ci-testing.yml
+++ b/.github/workflows/ci-testing.yml
@@ -1,5 +1,9 @@
 name: CI testing
 
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
+
 on:
   push:
     branches: [main, "release/*"]
@@ -18,16 +22,16 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        os: ["ubuntu-latest"]
-        python-version: ["3.10", "3.11"] # todo, "3.12"
+        # Runner images: https://github.com/actions/runner-images
+        os: ["ubuntu-24.04", "macos-15", "windows-2025"]
+        python-version: ["3.10", "3.11", "3.12", "3.13"]
         include:
-          - { os: "macos-latest", python-version: "3.12" }
-          - { os: "windows-latest", python-version: "3.11" }
           - { os: "ubuntu-22.04", python-version: "3.10", requires: "oldest" }
 
     timeout-minutes: 35
     env:
       TORCH_URL: "https://download.pytorch.org/whl/cpu/torch_stable.html"
+      UV_TORCH_BACKEND: "cpu"
 
     steps:
       - uses: actions/checkout@v6