diff --git a/.github/workflows/macos.yml b/.github/workflows/macos.yml
index 7288b0d..49c7d11 100644
--- a/.github/workflows/macos.yml
+++ b/.github/workflows/macos.yml
@@ -46,6 +46,8 @@ jobs:
       - name: Install prerequisites
         shell: bash -l {0}
         run: |
+          ruby - e  "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install)" < /dev/null  2 > /dev/null
+          brew install --build-from-source cmake
           brew install create-dmg
           if [ ! -d "./opencv" ]; then
             ruby - e  "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install)" < /dev/null  2 > /dev/null