diff --git a/taskcluster/taskgraph/transforms/tests.py b/taskcluster/taskgraph/transforms/tests.py
index 19d5873e5b54..fb6ff342225b 100644
--- a/taskcluster/taskgraph/transforms/tests.py
+++ b/taskcluster/taskgraph/transforms/tests.py
@@ -442,6 +442,8 @@ def set_tier(config, tests):
                                          'linux64-pgo/opt',
                                          'linux64-devedition/opt',
                                          'linux64-asan/opt',
+                                         'macosx64/opt',
+                                         'macosx64/debug',
                                          'android-4.3-arm7-api-15/opt',
                                          'android-4.3-arm7-api-15/debug',
                                          'android-4.2-x86/opt']: