diff --git a/.github/workflows/macos_ci.yml b/.github/workflows/macos_ci.yml
index 85e0810..5b16b77 100644
--- a/.github/workflows/macos_ci.yml
+++ b/.github/workflows/macos_ci.yml
@@ -33,8 +33,17 @@ jobs:
         uses: davidB/rust-cargo-make@v1
       - name: Install Dependencies
         run: |
-          # cargo make install_deps # doesn't work
-          brew install casacore/tap/casacore mwatelescope/tap/aoflagger
+          # cargo make install_deps
+          # doesn't work on macos, brew install ... says you need arch -arm64 brew ...
+          # but there's no way to distinguish between macos-13 and macos-14
+          # using uname -m or arch
+          # https://github.com/actions/runner-images/issues/9471#issuecomment-1992603303
+          for f in $(find /usr/local/bin -type l -print); do \
+            (readlink $f | grep -q -s "/Library") && echo Removing "$f" && rm -f "$f"; \
+          done || exit 0
+          INSTALL="brew install"
+          [ "${{ matrix.os }}" == "macos-14" ] && INSTALL="arch -arm64 brew install"
+          $INSTALL mwatelescope/tap/aoflagger
       - name: Run tests
         run: |
           cargo make test_no_default
diff --git a/Makefile.toml b/Makefile.toml
index 1d87cd0..08a618c 100644
--- a/Makefile.toml
+++ b/Makefile.toml
@@ -124,7 +124,13 @@ dependencies = ["linux_install_aoflagger"]
 
 [tasks.mac_install_deps]
 script = """
-brew install casacore/tap/casacore mwatelescope/tap/aoflagger
+INSTALL="brew install"
+# in github actions runners:
+# - macos-13: uname -m => x86_64, arch => i386
+# - macos-14: uname -m => x86_64, arch => i386
+# but macos-14 should be arm64 ?
+# in that case, we want INSTALL="arch -arm64 $INSTALL" apparently?
+$INSTALL mwatelescope/tap/aoflagger
 """
 
 [tasks.install_deps]