diff --git a/.github/workflows/pkg-installer.yml b/.github/workflows/pkg-installer.yml
index ac47f264bafac..15aff146a6e41 100644
--- a/.github/workflows/pkg-installer.yml
+++ b/.github/workflows/pkg-installer.yml
@@ -31,6 +31,10 @@ jobs:
       TEMPORARY_KEYCHAIN_FILE: 'homebrew_installer_signing.keychain-db'
       # Set to the oldest supported version of macOS
       HOMEBREW_MACOS_OLDEST_SUPPORTED: '13.0'
+    permissions:
+      contents: read # for code access
+      attestations: write # for actions/attest-build-provenance
+      id-token: write # for actions/attest-build-provenance
     steps:
       - name: Remove existing API cache (to force update)
         run: rm -rvf ~/Library/Caches/Homebrew/api
@@ -124,6 +128,11 @@ jobs:
             security delete-keychain "${RUNNER_TEMP}/${TEMPORARY_KEYCHAIN_FILE}"
           fi
 
+      - name: Generate build provenance
+        uses: actions/attest-build-provenance@5e9cb68e95676991667494a6a4e59b8a2f13e1d0 # v1.3.3
+        with:
+          subject-path: Homebrew-${{ steps.homebrew-version.outputs.version }}.pkg
+
       - name: Upload installer to GitHub Actions
         uses: actions/upload-artifact@b4b15b8c7c6ac21ea08fcf65892d2ee8f75cf882 # v4
         with: