diff --git a/.github/workflows/condatest.yml b/.github/workflows/condatest.yml
index d939783..4972adb 100644
--- a/.github/workflows/condatest.yml
+++ b/.github/workflows/condatest.yml
@@ -24,12 +24,12 @@ jobs:
         include:
           - { os: ubuntu-20.04,  CC: gcc-10,   CXX: g++-10,     python: '3.9'  }
           - { os: ubuntu-22.04,  CC: gcc,      CXX: g++,        python: '3.9'  }
-          - { os: ubuntu-latest, CC: gcc,      CXX: g++,        python: '3.11' }
           - { os: ubuntu-latest, CC: clang,    CXX: clang++,    python: '3.10' }
           - { os: ubuntu-latest, CC: gcc-12,   CXX: g++-12,     python: '3.11' }
+          - { os: ubuntu-latest, CC: gcc,      CXX: g++,        python: '3.11' } #geant4 pkg stuck on 3.11
 #          - { os: macos-11,      CC: clang,    CXX: clang++,    python: "3.10" }
 #          - { os: macos-12,      CC: clang,    CXX: clang++,    python: "3.11" }
-          - { os: macos-latest,      CC: clang,    CXX: clang++,    python: "3.12" }
+          - { os: macos-latest,      CC: clang,    CXX: clang++,    python: "3.11" } #geant4 pkg stuck on 3.11
     name: ${{ matrix.os }}.${{ matrix.CC }}.python-${{ matrix.python }}
     runs-on: ${{ matrix.os }}
     defaults: