--- a/taskcluster/ci/build/macosx.yml
+++ b/taskcluster/ci/build/macosx.yml
@@ -117,12 +117,13 @@ macosx64-nightly/opt:
         max-run-time: 36000
         env:
             TOOLTOOL_MANIFEST: "browser/config/tooltool-manifests/macosx64/cross-releng.manifest"
     run:
         using: mozharness
         actions: [get-secrets build update]
         config:
             - builds/releng_base_mac_64_cross_builds.py
+            - taskcluster_nightly.py
         script: "mozharness/scripts/fx_desktop_build.py"
         secrets: true
         tooltool-downloads: internal
     run-on-projects: []