diff --git a/.github/workflows/macOS.yml b/.github/workflows/macOS.yml
index a2c281de..fed221a7 100644
--- a/.github/workflows/macOS.yml
+++ b/.github/workflows/macOS.yml
@@ -15,7 +15,8 @@ jobs:
       - name: Install dependencies
         run: |
           brew install --cask xquartz
-          brew install  bison \
+          brew install  autoconf \
+                        bison \
                         gphoto2 \
                         gst-plugins-base \
                         mingw-w64 \