diff --git a/tools/ci/github/setup.sh b/tools/ci/github/setup.sh
index e86faebe6..24e964629 100755
--- a/tools/ci/github/setup.sh
+++ b/tools/ci/github/setup.sh
@@ -15,4 +15,6 @@ if [ $(uname) = Linux ]; then
   sudo apt update --fix-missing
   sudo apt install libc6-dbg # for valgrind
   brew install valgrind
+else
+  brew install pkg-config
 fi