diff --git a/.github/workflows/publish_pypi.yml b/.github/workflows/publish_pypi.yml
index b29e54961b..096c1d91b0 100644
--- a/.github/workflows/publish_pypi.yml
+++ b/.github/workflows/publish_pypi.yml
@@ -62,9 +62,8 @@ jobs:
         env:
           CIBW_ENVIRONMENT: 'PYBAMM_USE_VCPKG=ON VCPKG_ROOT_DIR=C:\vcpkg VCPKG_DEFAULT_TRIPLET=x64-windows-static-md VCPKG_FEATURE_FLAGS=manifests,registries CMAKE_GENERATOR="Visual Studio 17 2022" CMAKE_GENERATOR_PLATFORM=x64'
           CIBW_ARCHS: "AMD64"
-          CIBW_BEFORE_BUILD: >
-            python -m pip install --upgrade setuptools wheel
-          CIBW_TEST_COMMAND: "python -c 'import pybamm; print(pybamm.have_idaklu())' | findstr 'True'"
+          CIBW_BEFORE_BUILD: python -m pip install setuptools wheel
+          CIBW_TEST_COMMAND: python -c 'import pybamm; print(pybamm.have_idaklu())' | grep 'True'
 
       - name: Upload Windows wheels
         uses: actions/upload-artifact@v3
@@ -113,7 +112,7 @@ jobs:
             python -m pip install --upgrade cmake casadi setuptools wheel && scripts/fix_suitesparse_rpath_mac.sh
           CIBW_REPAIR_WHEEL_COMMAND_MACOS: >
             delocate-listdeps {wheel} && delocate-wheel -v -w {dest_dir} {wheel}
-          CIBW_TEST_COMMAND: "python -c 'import pybamm; print(pybamm.have_idaklu())' | grep 'True'"
+          CIBW_TEST_COMMAND: python -c 'import pybamm; print(pybamm.have_idaklu())' | grep 'True'
           CIBW_SKIP: "pp* *musllinux*"
 
       - name: Upload wheels