diff --git a/.github/workflows/build-on-release.yml b/.github/workflows/build-on-release.yml
index 7289a97..b349392 100644
--- a/.github/workflows/build-on-release.yml
+++ b/.github/workflows/build-on-release.yml
@@ -8,7 +8,8 @@ jobs:
   build:
     strategy:
       matrix:
-        os: [ubuntu-latest, windows-latest, macos-latest]
+        # we build on macos-13 for x86 builds
+        os: [ubuntu-latest, windows-latest, macos-latest, macos-13]
 
     runs-on: ${{ matrix.os }}
 
@@ -32,7 +33,7 @@ jobs:
         sudo apt-get install -y binutils
 
     - name: Install the Apple certificate and provisioning profile
-      if: matrix.os == 'macos-latest'
+      if: matrix.os == 'macos-latest' || matrix.os == 'macos-13' 
       env:
         BUILD_CERTIFICATE_BASE64: ${{ secrets.BUILD_CERTIFICATE_BASE64 }}
         P12_PASSWORD: ${{ secrets.P12_PASSWORD }}
@@ -62,7 +63,7 @@ jobs:
         cp $PP_PATH ~/Library/MobileDevice/Provisioning\ Profiles
 
     - name: Set version in code (Unix)
-      if: matrix.os == 'macos-latest' || matrix.os == 'ubuntu-latest'
+      if: matrix.os == 'macos-latest' || matrix.os == 'ubuntu-latest' || matrix.os == 'macos-13' 
       run: |
         awk 'NR==3{$0="__version__ = \"'${{ github.ref_name }}'\""}1' ./robusta_krr/__init__.py > temp && mv temp ./robusta_krr/__init__.py
         cat ./robusta_krr/__init__.py
@@ -79,7 +80,7 @@ jobs:
         GITHUB_REF_NAME: ${{ github.ref_name }}
 
     - name: Build with PyInstaller
-      if: matrix.os == 'macos-latest'
+      if: matrix.os == 'macos-latest' 
       shell: bash
       run: |
         pyinstaller --target-architecture arm64 krr.py
@@ -97,7 +98,7 @@ jobs:
         cp ./intro.txt ./dist/krr/intro.txt
 
     - name: Zip the application (Unix)
-      if: matrix.os == 'macos-latest' || matrix.os == 'ubuntu-latest'
+      if: matrix.os == 'macos-latest' || matrix.os == 'ubuntu-latest' || matrix.os == 'macos-13'
       run: |
         cd dist
         zip -r krr-${{ matrix.os }}-${{ github.ref_name }}.zip krr
@@ -129,7 +130,7 @@ jobs:
         path: ./krr-${{ matrix.os }}-${{ github.ref_name }}.zip
 
     - name: Clean up keychain and provisioning profile
-      if: (matrix.os == 'macos-latest') && always()
+      if: (matrix.os == 'macos-latest' || matrix.os == 'macos-13') && always()
       run: |
         security delete-keychain $RUNNER_TEMP/app-signing.keychain-db
         rm ~/Library/MobileDevice/Provisioning\ Profiles/build_pp.mobileprovision