diff --git a/.github/workflows/dockercentos.yml b/.github/workflows/dockercentos.yml
index e1f1a799..770f2b30 100644
--- a/.github/workflows/dockercentos.yml
+++ b/.github/workflows/dockercentos.yml
@@ -2,8 +2,9 @@
 on:
     push:
         branches:
-            - codac2
-            - codac2_codac4matlab
+        - codac1
+        - codac2
+        - codac2_codac4matlab
         tags: '' # Restrict to blank tags
     pull_request:
 
@@ -32,8 +33,10 @@ jobs:
         docker run --rm --privileged multiarch/qemu-user-static --reset -p yes
       if: (matrix.cfg.arch!='x86_64')&&(matrix.cfg.arch!='i386')
     - run: |
-        chmod a+x scripts/docker/build_pybinding.sh
-        docker run ${{ matrix.cfg.docker_flags }} --rm -v `pwd`:/io ${{ matrix.cfg.img }} /io/scripts/docker/build_pybinding.sh
+        chmod a+x scripts/docker/*.sh
+        if [ ${{ github.ref_name }} = 'codac2_codac4matlab' ] || [ ${{ github.event.pull_request.base.ref }} = 'codac2_codac4matlab' ]; then docker run ${{ matrix.cfg.docker_flags }} --rm -v `pwd`:/io ${{ matrix.cfg.img }} /io/scripts/docker/build_pybinding_codac4matlab.sh
+        else docker run ${{ matrix.cfg.docker_flags }} --rm -v `pwd`:/io ${{ matrix.cfg.img }} /io/scripts/docker/build_pybinding.sh
+        fi        
         ls wheelhouse
     - uses: xresloader/upload-to-github-release@v1
       env:
@@ -42,4 +45,4 @@ jobs:
         file: "wheelhouse/*.whl"
         overwrite: true
         tag_name: autotagname-${{ github.sha }}
-      if: (github.event_name!='pull_request')&&((github.ref_name=='codac2')||(github.ref_name=='codac2_codac4matlab'))
+      if: (github.event_name!='pull_request')&&((github.ref_name=='codac1')||(github.ref_name=='codac2')||(github.ref_name=='codac2_codac4matlab'))
diff --git a/.github/workflows/dockermatrix.yml b/.github/workflows/dockermatrix.yml
index fcb20b5d..8232472e 100644
--- a/.github/workflows/dockermatrix.yml
+++ b/.github/workflows/dockermatrix.yml
@@ -1,10 +1,16 @@
 # This file checks that the lib runs on ARM
 on:
     push:
-        branches: 'codac2'
+        branches:
+        - codac1
+        - codac2
+        # The following is implied by above selection...
+        #branches-ignore:
+        #- codac2_codac4matlab
         tags: '' # Restrict to blank tags
     pull_request:
-        branches: 'codac2'
+        branches-ignore:
+        - codac2_codac4matlab
 
 jobs:
  dockermatrix:
@@ -112,4 +118,4 @@ jobs:
         file: "*.zip;*.deb"
         overwrite: true
         tag_name: autotagname-${{ github.sha }}
-      if: (github.event_name != 'pull_request')
+      if: (github.event_name!='pull_request')&&((github.ref_name=='codac1')||(github.ref_name=='codac2')||(github.ref_name=='codac2_codac4matlab'))
diff --git a/.github/workflows/macosmatrix.yml b/.github/workflows/macosmatrix.yml
index 5cfe061a..f069f9d9 100644
--- a/.github/workflows/macosmatrix.yml
+++ b/.github/workflows/macosmatrix.yml
@@ -2,8 +2,9 @@
 on:
     push:
         branches:
-            - codac2
-            - codac2_codac4matlab
+        - codac1
+        - codac2
+        - codac2_codac4matlab
         tags: '' # Restrict to blank tags
     pull_request:
 
@@ -78,7 +79,7 @@ jobs:
         file: "*.whl"
         overwrite: true
         tag_name: autotagname-${{ github.sha }}
-      if: (github.event_name!='pull_request')&&((github.ref_name=='codac2')||(github.ref_name=='codac2_codac4matlab'))
+      if: (github.event_name!='pull_request')&&((github.ref_name=='codac1')||(github.ref_name=='codac2')||(github.ref_name=='codac2_codac4matlab'))
     - run: |
         pip install --no-deps --no-index *.whl
         python -c "import sys; print(sys.version)" ; python examples/02_centered_form/main.py
@@ -87,4 +88,4 @@ jobs:
         cd build && ctest -C Release -V --output-on-failure
         cd ..
       shell: bash
-      if: (matrix.cfg.cross!=true) && (github.ref_name!='codac2_codac4matlab') && (github.event_name!='pull_request')
\ No newline at end of file
+      if: (matrix.cfg.cross!=true)&&(github.ref_name!='codac2_codac4matlab')&&(github.event.pull_request.base.ref!='codac2_codac4matlab')
diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index f9b03791..931ef953 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -2,9 +2,11 @@
 on:
     push:
         branches-ignore:
-          - codac2_codac4matlab
+        - codac2_codac4matlab
         tags: '' # Restrict to blank tags
     pull_request:
+        branches-ignore:
+        - codac2_codac4matlab
 
 jobs:
  tests:
diff --git a/.github/workflows/unixmatrix.yml b/.github/workflows/unixmatrix.yml
index 5939ecb0..ed03a82d 100644
--- a/.github/workflows/unixmatrix.yml
+++ b/.github/workflows/unixmatrix.yml
@@ -6,9 +6,9 @@ on:
     pull_request:
 
 jobs:
- # This job may be commented if a new release should not be created...
  deploy:
     runs-on: ubuntu-latest
+    if: (github.event_name!='pull_request')&&((github.ref_name=='codac1')||(github.ref_name=='codac2')||(github.ref_name=='codac2_codac4matlab'))
     steps: 
     - uses: softprops/action-gh-release@v2
       id: create_release
@@ -17,10 +17,10 @@ jobs:
       with:
         draft: true
         tag_name: autotagname-${{ github.sha }}
-      if: (github.event_name != 'pull_request')&&(github.ref_name == 'codac2')
 
  unixmatrix:
     runs-on: ${{ matrix.cfg.os }}
+    if: (github.ref_name!='codac2_codac4matlab')&&(github.event.pull_request.base.ref!='codac2_codac4matlab')
     defaults:
         run:
             shell: ${{ matrix.cfg.shell }}
@@ -181,7 +181,7 @@ jobs:
         ./${{ matrix.cfg.test_config }}my_project
         cd ../..
       shell: bash
-      if: (matrix.cfg.cross!=true) && (github.ref_name!='codac2_codac4matlab') && (github.event_name!='pull_request')
+      if: (matrix.cfg.cross!=true)
     - run: |
         source ~/refreshenv.bashrc ; refreshenv ; export PATH=$BASHMINGWPATH:$PATH
         cd packages/choco
@@ -222,7 +222,7 @@ jobs:
         file: "*.zip;*.nupkg;*.deb"
         overwrite: true
         tag_name: autotagname-${{ github.sha }}
-      if: (github.event_name != 'pull_request')&&(github.ref_name == 'codac2')
+      if: (github.event_name!='pull_request')&&((github.ref_name=='codac1')||(github.ref_name=='codac2')||(github.ref_name=='codac2_codac4matlab'))
     - run: |
         if [ ${{ runner.os }} = Windows ]; then source ~/refreshenv.bashrc ; refreshenv ; export PATH=$BASHMINGWPATH:$PATH ; fi
         rm -Rf codac
@@ -233,4 +233,4 @@ jobs:
         ./${{ matrix.cfg.test_config }}my_project
         cd ../..
       shell: bash
-      if: (matrix.cfg.cross!=true) && (github.ref_name!='codac2_codac4matlab') && (github.event_name!='pull_request')
+      if: (matrix.cfg.cross!=true)
diff --git a/.github/workflows/vcmatrix.yml b/.github/workflows/vcmatrix.yml
index 5a2a8040..ff2cf5ae 100644
--- a/.github/workflows/vcmatrix.yml
+++ b/.github/workflows/vcmatrix.yml
@@ -2,8 +2,9 @@
 on:
     push:
         branches:
-            - codac2
-            - codac2_codac4matlab
+        - codac1
+        - codac2
+        - codac2_codac4matlab
         tags: '' # Restrict to blank tags
     pull_request:
 
@@ -79,7 +80,7 @@ jobs:
         file: "*.whl"
         overwrite: true
         tag_name: autotagname-${{ github.sha }}
-      if: (github.event_name!='pull_request')&&((github.ref_name=='codac2')||(github.ref_name=='codac2_codac4matlab'))
+      if: (github.event_name!='pull_request')&&((github.ref_name=='codac1')||(github.ref_name=='codac2')||(github.ref_name=='codac2_codac4matlab'))
     - run: |
         pip install --no-deps --no-index *.whl
         python -c "import sys; print(sys.version)" ; python examples/02_centered_form/main.py
@@ -88,4 +89,4 @@ jobs:
         cd build && ctest -C Release -V --output-on-failure
         cd ..
       shell: bash
-      if: (github.ref_name!='codac2_codac4matlab') && (github.event_name!='pull_request')
+      if: (github.ref_name!='codac2_codac4matlab')&&(github.event.pull_request.base.ref!='codac2_codac4matlab')
diff --git a/scripts/docker/build_pybinding_codac4matlab.sh b/scripts/docker/build_pybinding_codac4matlab.sh
new file mode 100644
index 00000000..157d285b
--- /dev/null
+++ b/scripts/docker/build_pybinding_codac4matlab.sh
@@ -0,0 +1,44 @@
+#!/bin/bash
+
+set -e -x
+
+wget https://github.com/lebarsfa/ibex-lib/releases/download/ibex-2.8.9.20240417/ibex_$(uname -m)_manylinux2014.zip --no-check-certificate -nv
+unzip -q ibex_$(uname -m)_manylinux2014.zip
+rm -Rf ibex_$(uname -m)_manylinux2014.zip
+sudo cp -Rf ibex/* /usr/local/
+
+git config --global --add safe.directory /io
+cd /io
+for PYBIN in /opt/python/cp3*/bin; do
+  
+  #if [ "${PYBIN}" = "/opt/python/cp310-cp310/bin" ]; then
+  #  continue
+  #fi
+
+  "${PYBIN}/python" -m pip install --upgrade pip
+  "${PYBIN}/python" -m pip install --upgrade wheel setuptools
+  mkdir -p build_dir && cd build_dir
+  cmake -E env CXXFLAGS="-fPIC" CFLAGS="-fPIC" cmake -DPYTHON_EXECUTABLE=${PYBIN}/python -DCMAKE_BUILD_TYPE=Release -DBUILD_TESTS=ON -DWITH_CAPD=OFF -DWITH_PYTHON=ON ..
+  make -j4
+
+  make pip_package
+  echo "copy wheel and clean build_dir"
+  for whl in *.whl; do
+    auditwheel repair "$whl" -w /io/wheelhouse/
+  done
+  
+  "${PYBIN}/python" -m pip install codac4matlab --no-deps --no-index -f /io/wheelhouse
+  "${PYBIN}/python" -c "import sys; print(sys.version); import codac4matlab; print(codac4matlab.__version__); from codac4matlab import *; print(IntervalVector([[-0.1],[0],[0.2]]))"
+  #"${PYBIN}/python" ../examples/02_centered_form/main.py
+  #"${PYBIN}/python" -m pip install numpy --prefer-binary
+  #"${PYBIN}/python" -m unittest discover codac.tests
+  
+  #make test ARGS="-V --output-on-failure"
+  #echo "start of Testing/Temporary/LastTest.log"
+  #cat Testing/Temporary/LastTest.log
+  #echo "end of Testing/Temporary/LastTest.log"
+
+  cd /io
+  rm -fr build_dir
+
+done