diff --git a/.github/workflows/conda-cpp-tests.yaml b/.github/workflows/conda-cpp-tests.yaml
index 6533ee28..b3dbb829 100644
--- a/.github/workflows/conda-cpp-tests.yaml
+++ b/.github/workflows/conda-cpp-tests.yaml
@@ -68,11 +68,10 @@ jobs:
           export MATRICES="
             pull-request:
               # amd64
-              - { ARCH: 'amd64', PY_VER: '3.9',  CUDA_VER: '11.4.3', LINUX_VER: 'centos7',      GPU: 'v100', DRIVER: 'latest'  }
-              - { ARCH: 'amd64', PY_VER: '3.10', CUDA_VER: '11.8.0', LINUX_VER: 'ubuntu22.04',  GPU: 'v100', DRIVER: 'latest'  }
-              - { ARCH: 'amd64', PY_VER: '3.10', CUDA_VER: '12.2.2', LINUX_VER: 'ubuntu22.04',  GPU: 'v100', DRIVER: 'latest'  }
+              - { ARCH: 'amd64', PY_VER: '3.9',  CUDA_VER: '11.8.0', LINUX_VER: 'centos7',     GPU: 'v100', DRIVER: 'earliest'   }
+              - { ARCH: 'amd64', PY_VER: '3.11', CUDA_VER: '12.2.2', LINUX_VER: 'ubuntu22.04', GPU: 'v100', DRIVER: 'latest'   }
               # arm64
-              - { ARCH: 'arm64', PY_VER: '3.10', CUDA_VER: '12.0.1', LINUX_VER: 'ubuntu22.04',  GPU: 'a100', DRIVER: 'latest'  }
+              - { ARCH: 'arm64', PY_VER: '3.10', CUDA_VER: '12.0.1', LINUX_VER: 'rockylinux8', GPU: 'a100', DRIVER: 'latest'   }
             nightly:
               # amd64
               - { ARCH: 'amd64', PY_VER: '3.9',  CUDA_VER: '11.4.3', LINUX_VER: 'centos7',     GPU: 'v100', DRIVER: 'earliest' }