--- a/pylib/mozautomation/mozautomation/repository.py
+++ b/pylib/mozautomation/mozautomation/repository.py
@@ -42,17 +42,18 @@ TREE_ALIASES = {
     'c-b': ('comm-beta',),
     'cb': ('comm-beta',),
     'c-r': ('comm-release',),
     'cr': ('comm-release',),
 
     'releases': ('esr45', 'release', 'beta', 'aurora', 'central'),
     'integration': ('inbound', 'fx-team', 'autoland'),
     'twigs': ('alder', 'ash', 'birch', 'cedar', 'cypress', 'date', 'elm',
-              'fig', 'gum', 'holly', 'jamun', 'larch', 'maple', 'oak', 'pine'),
+              'fig', 'gum', 'holly', 'jamun', 'larch', 'maple', 'oak', 'pine',
+              'stylo'),
     'obsolete': ('esr10', 'esr17', 'b2ginbound', 'b2g18', 'esr24', 'esr31',
                  'esr38', 'b2g26', 'b2g28', 'b2g30', 'b2g32', 'b2g34', 'b2g37',
                  'b2g44', 'b2g-ota'),
 }
 
 # Aliases that map to multiple repositories.
 MULTI_TREE_ALIASES = {}
 for tree, aliases in TREE_ALIASES.items():
@@ -105,16 +106,17 @@ REPOS = {
     'fig': 'projects/fig',
     'gum': 'projects/gum',
     'holly': 'projects/holly',
     'jamun': 'projects/jamun',
     'larch': 'projects/larch',
     'maple': 'projects/maple',
     'oak': 'projects/oak',
     'pine': 'projects/pine',
+    'stylo': 'incubator/stylo',
 
     # Comm repositories.
     'comm': 'comm-central',
     'comm-aurora': 'releases/comm-aurora',
     'comm-beta': 'releases/comm-beta',
     'comm-release': 'releases/comm-release',
     'comm-esr10': 'releases/comm-esr10',
     'comm-esr17': 'releases/comm-esr17',