diff --git a/tools/mac_setup.sh b/tools/mac_setup.sh
index b85981dc04..214a917f8b 100755
--- a/tools/mac_setup.sh
+++ b/tools/mac_setup.sh
@@ -52,9 +52,14 @@ brew "zeromq"
 brew "protobuf"
 brew "protobuf-c"
 brew "swig"
-cask "gcc-arm-embedded"
 EOS
 
+# Install gcc-arm-embedded 10.3-2021.10. 11.x is broken on M1 Macs with Xcode 13.3~
+brew uninstall gcc-arm-embedded || true
+curl -L https://github.com/Homebrew/homebrew-cask/raw/d407663b8017a0a062c7fc0b929faf2e16abd1ff/Casks/gcc-arm-embedded.rb > /tmp/gcc-arm-embedded.rb
+brew install --cask /tmp/gcc-arm-embedded.rb
+rm /tmp/gcc-arm-embedded.rb
+
 echo "[ ] finished brew install t=$SECONDS"
 
 BREW_PREFIX=$(brew --prefix)