diff --git a/.github/workflows/test_suite.yml b/.github/workflows/test_suite.yml
index 87fb02bec..ed5829340 100644
--- a/.github/workflows/test_suite.yml
+++ b/.github/workflows/test_suite.yml
@@ -96,6 +96,7 @@ jobs:
     - uses: actions/checkout@v2
     - name: installs
       run: |
+        brew install pkgconf
         brew install netcdf
         brew install netcdf-cxx
         brew install boost