diff --git a/.github/workflows/python_package_ci.yaml b/.github/workflows/python_package_ci.yaml
index 839f5314..2764728d 100644
--- a/.github/workflows/python_package_ci.yaml
+++ b/.github/workflows/python_package_ci.yaml
@@ -49,10 +49,9 @@ jobs:
         if: matrix.os == 'macos-latest'
         run: |
           brew bundle install --file=Brewfile
-          # configure PATH & PKG_CONFIG_PATH as per
-          # https://gitlab.pyicu.org/main/pyicu
-          echo "/opt/homebrew/opt/icu4c/bin:/opt/homebrew/opt/icu4c/sbin:$PATH" >> $GITHUB_PATH
-          echo "PKG_CONFIG_PATH=$PKG_CONFIG_PATH:/opt/homebrew/opt/icu4c/lib/pkgconfig" >> $GITHUB_ENV
+          # Configure PATH & PKG_CONFIG_PATH as in https://gitlab.pyicu.org/main/pyicu.
+          echo "PATH='$(brew --prefix)/opt/icu4c/bin:$(brew --prefix)/opt/icu4c/sbin:$PATH'" >> $GITHUB_PATH
+          echo "PKG_CONFIG_PATH='$PKG_CONFIG_PATH:$(brew --prefix)/opt/icu4c/lib/pkgconfig'" >> $GITHUB_ENV
 
       - name: Install Python Dependencies
         run: |