diff --git a/Library/Homebrew/attestation.rb b/Library/Homebrew/attestation.rb
index fbf55495af..dea08de3c4 100644
--- a/Library/Homebrew/attestation.rb
+++ b/Library/Homebrew/attestation.rb
@@ -15,8 +15,6 @@ module Homebrew
 
     # @api private
     BACKFILL_REPO = "trailofbits/homebrew-brew-verify"
-    # @api private
-    BACKFILL_REPO_CI_URI = "https://github.com/trailofbits/homebrew-brew-verify/.github/workflows/backfill_signatures.yml@refs/heads/main"
 
     # No backfill attestations after this date are considered valid.
     #
diff --git a/Library/Homebrew/test/attestation_spec.rb b/Library/Homebrew/test/attestation_spec.rb
index b04b0946a7..e24664bd8d 100644
--- a/Library/Homebrew/test/attestation_spec.rb
+++ b/Library/Homebrew/test/attestation_spec.rb
@@ -124,8 +124,7 @@ RSpec.describe Homebrew::Attestation do
 
       expect(Utils).to receive(:safe_popen_read)
         .with(fake_gh, "attestation", "verify", cached_download, "--repo",
-              described_class::BACKFILL_REPO, "--format", "json", "--cert-identity",
-              described_class::BACKFILL_REPO_CI_URI)
+              described_class::BACKFILL_REPO, "--format", "json")
         .and_return(fake_json_resp_backfill)
 
       described_class.check_core_attestation fake_bottle
@@ -141,8 +140,7 @@ RSpec.describe Homebrew::Attestation do
 
       expect(Utils).to receive(:safe_popen_read)
         .with(fake_gh, "attestation", "verify", cached_download, "--repo",
-              described_class::BACKFILL_REPO, "--format", "json", "--cert-identity",
-              described_class::BACKFILL_REPO_CI_URI)
+              described_class::BACKFILL_REPO, "--format", "json")
         .and_return(fake_json_resp_too_new)
 
       expect do