diff --git a/.github/workflows/check.yml b/.github/workflows/check.yml
index 988c757..afdb7b2 100644
--- a/.github/workflows/check.yml
+++ b/.github/workflows/check.yml
@@ -14,11 +14,11 @@ jobs:
           # see about runners: https://docs.github.com/en/actions/writing-workflows/choosing-where-your-workflow-runs/choosing-the-runner-for-a-job#standard-github-hosted-runners-for-public-repositories
           - ubuntu-latest # x64 linux
           - ubuntu-24.04-arm # arm linux
-          - macos-13 # Intel macOS
+          - macos-15-intel # x64 macOS
           - macos-latest # arm macOS
     runs-on: ${{ matrix.platform }}
     timeout-minutes: 10
     steps:
-      - uses: actions/checkout@v4
-      - uses: cachix/install-nix-action@v30
+      - uses: actions/checkout@v5
+      - uses: cachix/install-nix-action@v31
       - run: nix flake check