diff --git a/.github/workflows/macos-install.sh b/.github/workflows/macos-install.sh
index dfd7d0553..65f2b81d5 100755
--- a/.github/workflows/macos-install.sh
+++ b/.github/workflows/macos-install.sh
@@ -2,7 +2,7 @@
 
 set -e
 
-brew install libtiff libjpeg openjpeg libimagequant webp little-cms2 freetype libraqm
+brew install libtiff libjpeg openjpeg libimagequant webp little-cms2 freetype openblas libraqm
 
 PYTHONOPTIMIZE=0 python3 -m pip install cffi
 python3 -m pip install coverage
@@ -13,6 +13,7 @@ python3 -m pip install -U pytest-cov
 python3 -m pip install -U pytest-timeout
 python3 -m pip install pyroma
 
+echo -e "[openblas]\nlibraries = openblas\nlibrary_dirs = /usr/local/opt/openblas/lib" >> ~/.numpy-site.cfg
 python3 -m pip install numpy
 
 # extra test images