diff --git a/.github/workflows/c-cpp.yml b/.github/workflows/c-cpp.yml
index 4e048d050..b49c58d60 100644
--- a/.github/workflows/c-cpp.yml
+++ b/.github/workflows/c-cpp.yml
@@ -10,8 +10,13 @@ jobs:
   build:
     strategy:
       matrix:
-        os: ['ubuntu-20.04', 'ubuntu-22.04', 'ubuntu-24.04', 'macos-13', 'windows-2022']
-        build-system: ['autotools', 'meson']
+        os: [ubuntu-20.04, ubuntu-22.04, ubuntu-24.04,
+             macos-13, macos-15,
+             windows-2022]
+        build-system: [autotools, meson]
+        exclude:
+          - os: macos-15
+            build-system: autotools
       fail-fast: false
     runs-on: ${{ matrix.os }}