diff --git a/.github/workflows/ci-pr-validation.yaml b/.github/workflows/ci-pr-validation.yaml
index 67ce86fa..af7dd8a5 100644
--- a/.github/workflows/ci-pr-validation.yaml
+++ b/.github/workflows/ci-pr-validation.yaml
@@ -50,7 +50,7 @@ jobs:
       - name: Install deps (macOS)
         if: ${{ startsWith(matrix.os, 'macos') }}
         run:
-          brew install wireshark protobuf
+          brew install pkg-config wireshark protobuf
 
       - name: Build wireshark plugin
         run: |