diff --git a/.github/workflows/electron-build.yml b/.github/workflows/electron-build.yml
index 9bc9b9e7..06145efe 100644
--- a/.github/workflows/electron-build.yml
+++ b/.github/workflows/electron-build.yml
@@ -129,21 +129,31 @@ jobs:
         if: steps.check_certs.outputs.has_certs == 'true'
         env:
           MAC_BUILD_CERTIFICATE_BASE64: ${{ secrets.MAC_BUILD_CERTIFICATE_BASE64 }}
+          MAC_INSTALLER_CERTIFICATE_BASE64: ${{ secrets.MAC_INSTALLER_CERTIFICATE_BASE64 }}
           MAC_P12_PASSWORD: ${{ secrets.MAC_P12_PASSWORD }}
           MAC_KEYCHAIN_PASSWORD: ${{ secrets.MAC_KEYCHAIN_PASSWORD }}
         run: |
-          CERTIFICATE_PATH=$RUNNER_TEMP/build_certificate.p12
+          APP_CERT_PATH=$RUNNER_TEMP/app_certificate.p12
+          INSTALLER_CERT_PATH=$RUNNER_TEMP/installer_certificate.p12
           KEYCHAIN_PATH=$RUNNER_TEMP/app-signing.keychain-db
 
-          echo -n "$MAC_BUILD_CERTIFICATE_BASE64" | base64 --decode -o $CERTIFICATE_PATH
+          # Decode certificates
+          echo -n "$MAC_BUILD_CERTIFICATE_BASE64" | base64 --decode -o $APP_CERT_PATH
+          echo -n "$MAC_INSTALLER_CERTIFICATE_BASE64" | base64 --decode -o $INSTALLER_CERT_PATH
 
+          # Create and configure keychain
           security create-keychain -p "$MAC_KEYCHAIN_PASSWORD" $KEYCHAIN_PATH
           security set-keychain-settings -lut 21600 $KEYCHAIN_PATH
           security unlock-keychain -p "$MAC_KEYCHAIN_PASSWORD" $KEYCHAIN_PATH
 
-          security import $CERTIFICATE_PATH -P "$MAC_P12_PASSWORD" -A -t cert -f pkcs12 -k $KEYCHAIN_PATH
+          # Import both certificates
+          security import $APP_CERT_PATH -P "$MAC_P12_PASSWORD" -A -t cert -f pkcs12 -k $KEYCHAIN_PATH
+          security import $INSTALLER_CERT_PATH -P "$MAC_P12_PASSWORD" -A -t cert -f pkcs12 -k $KEYCHAIN_PATH
           security list-keychain -d user -s $KEYCHAIN_PATH
 
+          echo "Imported certificates:"
+          security find-identity -v -p codesigning $KEYCHAIN_PATH
+
       - name: Build macOS App Store Package
         if: steps.check_certs.outputs.has_certs == 'true'
         run: npm run build:mac