diff --git a/taskcluster/ci/startup-test/kind.yml b/taskcluster/ci/startup-test/kind.yml
index 9547d0c47617..2fd545332f7b 100644
--- a/taskcluster/ci/startup-test/kind.yml
+++ b/taskcluster/ci/startup-test/kind.yml
@@ -84,7 +84,7 @@ jobs:
             upstream_kind: repackage
             upstream_artifact: target.dmg
             binary: Contents/MacOS/firefox
-        worker-type: t-osx-1014
+        worker-type: t-osx-1015-r8
         shipping-product: firefox
         attributes:
             build_platform: macosx64-shippable