diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index 864ec25..9b42489 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -4,12 +4,16 @@ on:
   release:
     types: [published]
 
+concurrency:
+  group: ci-${{ github.ref }}
+  cancel-in-progress: false
+
 jobs:
   build-release:
     runs-on: ${{ matrix.operating-system }}
     strategy:
       matrix:
-        operating-system: [ubuntu-latest, windows-latest, macos-latest]
+        operating-system: [ubuntu-20.04, windows-2019, macos-12]
     env:
       pact_do_not_track: true
     steps:
diff --git a/release.sh b/release.sh
index fc2ee9c..049054f 100755
--- a/release.sh
+++ b/release.sh
@@ -44,8 +44,9 @@ case "$1" in
             openssl dgst -sha256 -r target/artifacts/pact-protobuf-plugin-macos-x86_64.gz > target/artifacts/pact-protobuf-plugin-macos-x86_64.gz.sha256
 
             # M1
-            export SDKROOT=$(xcrun -sdk macosx11.1 --show-sdk-path)
-            export MACOSX_DEPLOYMENT_TARGET=$(xcrun -sdk macosx11.1 --show-sdk-platform-version)
+            # export SDKROOT=$(xcrun -sdk macosx11.1 --show-sdk-path)
+            # export MACOSX_DEPLOYMENT_TARGET=$(xcrun -sdk macosx11.1 --show-sdk-platform-version)
+            export MACOSX_DEPLOYMENT_TARGET=${MACOSX_DEPLOYMENT_TARGET:-12}
             cargo build --target aarch64-apple-darwin --release
 
             gzip -c target/aarch64-apple-darwin/release/pact-protobuf-plugin > target/artifacts/pact-protobuf-plugin-osx-aarch64.gz
@@ -58,4 +59,3 @@ case "$1" in
             exit 1
             ;;
 esac
-