diff --git a/taskcluster/taskgraph/actions/release_promotion.py b/taskcluster/taskgraph/actions/release_promotion.py
--- a/taskcluster/taskgraph/actions/release_promotion.py
+++ b/taskcluster/taskgraph/actions/release_promotion.py
@@ -16,76 +16,76 @@ from .util import (find_decision_task, f
 from taskgraph.util.taskcluster import get_artifact
 from taskgraph.util.partials import populate_release_history
 from taskgraph.util.partners import fix_partner_config
 from taskgraph.taskgraph import TaskGraph
 from taskgraph.decision import taskgraph_decision
 from taskgraph.parameters import Parameters
 from taskgraph.util.attributes import RELEASE_PROMOTION_PROJECTS

-RELEASE_PROMOTION_CONFIG = {
-    'promote_fennec': {
+RELEASE_PROMOTION_CONFIG = [
+    {'promote_fennec': {
         'target_tasks_method': 'promote_fennec',
         'product': 'fennec',
-    },
-    'ship_fennec': {
+    }},
+    {'ship_fennec': {
         'target_tasks_method': 'ship_fennec',
         'product': 'fennec',
-    },
-    'ship_fennec_rc': {
+    }},
+    {'ship_fennec_rc': {
         'target_tasks_method': 'ship_fennec',
         'product': 'fennec',
         'release_type': 'rc',
-    },
-    'promote_firefox': {
+    }},
+    {'promote_firefox': {
         'target_tasks_method': 'promote_firefox',
         'product': 'firefox',
-    },
-    'push_firefox': {
+    }},
+    {'push_firefox': {
         'target_tasks_method': 'push_firefox',
         'product': 'firefox',
-    },
-    'ship_firefox': {
+    }},
+    {'ship_firefox': {
         'target_tasks_method': 'ship_firefox',
         'product': 'firefox',
-    },
-    'promote_firefox_rc': {
+    }},
+    {'promote_firefox_rc': {
         'target_tasks_method': 'promote_firefox',
         'product': 'firefox',
         'release_type': 'rc',
-    },
-    'ship_firefox_rc': {
+    }},
+    {'ship_firefox_rc': {
         'target_tasks_method': 'ship_firefox',
         'product': 'firefox',
         'release_type': 'rc',
-    },
-    'promote_firefox_partners': {
+    }},
+    {'promote_firefox_partners': {
         'target_tasks_method': 'promote_firefox',
         'product': 'firefox',
         'rebuild_kinds': [
             'release-partner-repack',
             'release-partner-beetmover',
             'release-partner-repack-chunking-dummy',
             'release-partner-repackage-signing',
             'release-partner-repackage',
             'release-partner-signing',
         ],
-    },
-    'promote_devedition': {
+    }},
+    {'promote_devedition': {
         'target_tasks_method': 'promote_devedition',
         'product': 'devedition',
-    },
-    'push_devedition': {
+    }},
+    {'push_devedition': {
         'target_tasks_method': 'push_devedition',
         'product': 'devedition',
-    },
-    'ship_devedition': {
+    }},
+    {'ship_devedition': {
         'target_tasks_method': 'ship_devedition',
         'product': 'devedition',
-    },
+    }},
 }

 VERSION_BUMP_FLAVORS = (
     'ship_fennec',
     'ship_firefox',
     'ship_devedition',
 )

@@ -144,17 +144,17 @@ def is_release_promotion_available(param
                 'description': ('Optional: the revision to promote. If specified, '
                                 'and if neither `pushlog_id` nor `previous_graph_kinds` '
                                 'is specified, find the `pushlog_id using the '
                                 'revision.'),
             },
             'release_promotion_flavor': {
                 'type': 'string',
                 'description': 'The flavor of release promotion to perform.',
-                'enum': sorted(RELEASE_PROMOTION_CONFIG.keys()),
+                'enum': RELEASE_PROMOTION_CONFIG.map(lambda x: x.keys()[0]),
             },
             'rebuild_kinds': {
                 'type': 'array',
                 'description': ('Optional: an array of kinds to ignore from the previous '
                                 'graph(s).'),
                 'items': {
                     'type': 'string',
                 },
@@ -257,17 +257,17 @@ def is_release_promotion_available(param
                 'description': ('Toggle for creating EME-free repacks'),
             },
         },
         "required": ['release_promotion_flavor', 'build_number'],
     }
 )
 def release_promotion_action(parameters, graph_config, input, task_group_id, task_id, task):
     release_promotion_flavor = input['release_promotion_flavor']
-    promotion_config = RELEASE_PROMOTION_CONFIG[release_promotion_flavor]
+    promotion_config = RELEASE_PROMOTION_CONFIG.filter(lambda x: x.keys()[0] == release_promotion_flavor)[0].values()[0]
     release_history = {}
     product = promotion_config['product']

     next_version = str(input.get('next_version') or '')
     if release_promotion_flavor in VERSION_BUMP_FLAVORS:
         # We force str() the input, hence the 'None'
         if next_version in ['', 'None']:
             raise Exception(
@@ -285,17 +285,17 @@ def release_promotion_action(parameters,
                 )
             balrog_prefix = product.title()
             os.environ['PARTIAL_UPDATES'] = partial_updates
             release_history = populate_release_history(
                 balrog_prefix, parameters['project'],
                 partial_updates=input['partial_updates']
             )

-    promotion_config = RELEASE_PROMOTION_CONFIG[release_promotion_flavor]
+    promotion_config = RELEASE_PROMOTION_CONFIG.filter(lambda x: x.keys()[0] == release_promotion_flavor)[0].values()[0]

     target_tasks_method = promotion_config['target_tasks_method'].format(
         project=parameters['project']
     )
     rebuild_kinds = input.get(
         'rebuild_kinds', promotion_config.get('rebuild_kinds', [])
     )
     do_not_optimize = input.get(