diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 59f1466..0153a97 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -3,16 +3,20 @@ on: [push, pull_request]
 
 jobs:
   unix:
-    runs-on: ${{matrix.os}}
+    runs-on: ${{matrix.platform.os}}
     strategy:
       matrix:
         build: [Debug, Release]
-        os: [macos-latest, ubuntu-latest]
-        compiler: [g++, clang++-15]
+        platform: [
+          { os: macos-latest, ccx: g++ },
+          { os: macos-latest, ccx: clang++ },
+          { os: ubuntu-latest, ccx: g++ }
+          { os: ubuntu-latest, ccx: clang++-15 }
+        ]
         std_version: [17, 20]
-    name: ${{matrix.os}} ${{matrix.compiler}} ${{matrix.build}} std:${{matrix.std_version}}
+    name: ${{matrix.platform.os}} ${{matrix.platform.ccx}} ${{matrix.build}} std:${{matrix.std_version}}
     env:
-      CXX: ${{ matrix.compiler }}
+      CXX: ${{ matrix.platform.ccx }}
       CTEST_OUTPUT_ON_FAILURE: 1
     steps:
     - uses: actions/checkout@v3