diff --git a/.github/workflows/publish.yml b/.github/workflows/publish.yml
index 0b8abc8b..4bb1bd81 100644
--- a/.github/workflows/publish.yml
+++ b/.github/workflows/publish.yml
@@ -70,7 +70,8 @@ jobs:
           pip install cibuildwheel
           export CIBW_PLATFORM=linux
           # Set for which Python version to build. 
-          py_version=${matrix.python-version//.}  # 3.11 -> 311     
+          system_python_version=${{ matrix.python-version }}
+          py_version=${system_python_version//.}  # 3.11 -> 311     
           EXPORT CIBW_BUILD=cp${py_version}-manylinux_x86_64
           # Build wheel
           echo "Building ${CIBW_BUILD} wheel"