diff --git a/.github/workflows/devbuild.yml b/.github/workflows/devbuild.yml
index 26c96e48..26469aaf 100644
--- a/.github/workflows/devbuild.yml
+++ b/.github/workflows/devbuild.yml
@@ -324,12 +324,19 @@ jobs:
         run: |
           echo "which python3: $(which python3)"
           ls -al $(which python3)
-          if [ "${{ matrix.os }}" == "macos-13" ] || [ "${{ matrix.os }}" == "macos-14" ] ; then
+          if [ "${{ matrix.os }}" == "macos-13" ] ; then
             # suppress the warning of pip because brew forces PEP668 since python3.12
             python3 -m pip -v install --upgrade setuptools  --break-system-packages
             python3 -m pip -v install --upgrade pip  --break-system-packages
             python3 -m pip -v install --upgrade numpy pytest flake8 jsonschema  --break-system-packages
             python3 -m pip -v install --upgrade pyside6==$(qmake -query QT_VERSION)  --break-system-packages
+          elif [ "${{ matrix.os }}" == "macos-14" ] ; then
+            python3 -m pip -v install --upgrade setuptools
+            python3 -m pip -v install --upgrade pip
+            python3 -m pip -v install --upgrade numpy pytest flake8 jsonschema
+            # For now (2024/10/22), pyside6 6.6.3 does not support Python 3.13.
+            # Use --ignore-requires-python to force installation.
+            python3 -m pip -v install --upgrade pyside6==$(qmake -query QT_VERSION)  --break-system-packages --ignore-requires-python
           else
             python3 -m pip -v install --upgrade setuptools
             python3 -m pip -v install --upgrade pip