diff --git a/.github/workflows/macos-install.sh b/.github/workflows/macos-install.sh
index dfd7d0553..a20838a15 100755
--- a/.github/workflows/macos-install.sh
+++ b/.github/workflows/macos-install.sh
@@ -3,6 +3,7 @@
 set -e
 
 brew install libtiff libjpeg openjpeg libimagequant webp little-cms2 freetype libraqm
+export PKG_CONFIG_PATH="/usr/local/opt/openblas/lib/pkgconfig"
 
 PYTHONOPTIMIZE=0 python3 -m pip install cffi
 python3 -m pip install coverage