diff --git a/.github/workflows/pymake-gcc.yml b/.github/workflows/pymake-gcc.yml
index 7b2a77e..fcd3ae1 100644
--- a/.github/workflows/pymake-gcc.yml
+++ b/.github/workflows/pymake-gcc.yml
@@ -6,6 +6,7 @@ on:
   push:
     branches: 
       - master
+      - ci-test
   pull_request:
     branches:
       - master
@@ -17,7 +18,19 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        os: [ ubuntu-latest, macos-latest, windows-latest ]
+        include:
+          # test latest gcc and python
+          - {os: ubuntu-latest, gcc: 13, python: "3.11"}
+          - {os: windows-latest, gcc: 12, python: "3.11"}
+          - {os: macos-latest, gcc: 13, python: "3.11"}
+          # test latest gcc and previous python
+          - {os: ubuntu-latest, gcc: 13, python: "3.11"}
+          - {os: ubuntu-latest, gcc: 13, python: "3.10"}
+          - {os: ubuntu-latest, gcc: 13, python: 3.9}
+          - {os: ubuntu-latest, gcc: 13, python: 3.8}
+          # test latest python and previous gcc
+          - {os: ubuntu-latest, gcc: 12, python: "3.11"}
+          - {os: ubuntu-latest, gcc: 11, python: "3.11"}
     defaults:
       run:
         shell: bash
@@ -33,7 +46,7 @@ jobs:
       - name: Setup Python
         uses: actions/setup-python@v4
         with:
-          python-version: "3.10"
+          python-version: ${{ matrix.python }}
 
       - name: Install python packages
         run: |
@@ -44,127 +57,25 @@ jobs:
         uses: awvwgk/setup-fortran@v1
         with:
           compiler: gcc
-          version: 11
-
-      - name: Set CXX (temporary)
-        if: runner.os == 'Windows'
-        run: |
-          echo "CXX=g++" >> $GITHUB_ENV
-
-      - name: Download examples for pytest runs
-        run: |
-          .github/common/download-examples.sh
-
-      - name: Run pytest
-        working-directory: ./autotest
-        run: |
-          pytest -v --dist=loadfile -n=auto -m="base or regression" --durations=0 --cov=pymake --cov-report=xml --basetemp=pytest_temp
-
-      - name: Print coverage report before upload
-        working-directory: ./autotest
-        run: |
-          coverage report
-
-      - name: Upload coverage to Codecov
-        uses: codecov/codecov-action@v3
-        with:
-          file: ./autotest/coverage.xml
-
-  pymakeCI-gcc-prev:
-    name: pymake CI GCC 9 and 8
-    runs-on: ubuntu-latest
-    strategy:
-      fail-fast: false
-      matrix:
-        gcc-version: [ 9, 8 ]
-    defaults:
-      run:
-        shell: bash
-
-    steps:
-      - name: Checkout repo
-        uses: actions/checkout@v4
-
-      - name: Setup Graphviz
-        uses: ts-graphviz/setup-graphviz@v1
-
-      - name: Set up Python
-        uses: actions/setup-python@v4
-        with:
-          python-version: "3.10"
-
-      - name: Install python packages
-        run: |
-          python -m pip install --upgrade pip
-          pip install ".[test]"
-
-      - name: Setup GNU Fortran
-        uses: awvwgk/setup-fortran@v1
-        with:
-          compiler: gcc
-          version: ${{ matrix.gcc-version }}
-
-      - name: Print GNU compiler versions
-        run: |
-          gfortran --version
-          gcc --version
-          g++ --version
+          version: ${{ matrix.gcc }}
 
       - name: Download examples for pytest runs
-        run: |
-          .github/common/download-examples.sh
+        run: .github/common/download-examples.sh
 
       - name: Run pytest
         working-directory: ./autotest
         run: |
-          pytest -v --dist=loadfile -n=auto -m="base" --durations=0 --cov=pymake --cov-report=xml
+          markers="base"
+          if [[ ${{ matrix.gcc }} == 13 ]]; then
+            markers="base or regression"
+          fi
+          pytest -v --dist=loadfile -n=auto --durations=0 --basetemp=pytest_temp --cov=pymake --cov-report=xml --cov-append -m "$markers"
 
       - name: Print coverage report before upload
         working-directory: ./autotest
-        run: |
-          coverage report
+        run: coverage report
 
       - name: Upload coverage to Codecov
         uses: codecov/codecov-action@v3
         with:
-          file: ./autotest/coverage.xml
-
-  pymakeCI-python-prev:
-    name: pymake CI with previous python versions
-    runs-on: ubuntu-latest
-    strategy:
-      fail-fast: false
-      matrix:
-        python-version: [ 3.9, 3.8 ]
-    defaults:
-      run:
-        shell: bash
-
-    steps:
-      - name: Checkout repo
-        uses: actions/checkout@v4
-
-      - name: Set up Python ${{ matrix.python-version }}
-        uses: actions/setup-python@v4
-        with:
-          python-version: ${{ matrix.python-version }}
-
-      - name: Install python packages
-        run: |
-          python -m pip install --upgrade pip
-          pip install ".[test]"
-
-      - name: Setup GNU Fortran
-        uses: awvwgk/setup-fortran@v1
-        with:
-          compiler: gcc
-          version: 11
-
-      - name: Download examples for pytest runs
-        run: |
-          .github/common/download-examples.sh
-
-      - name: Run pytest
-        working-directory: ./autotest
-        run: |
-          pytest -v --dist=loadfile -n=auto -m="base" --durations=0
+          file: ./autotest/coverage.xml
\ No newline at end of file