diff --git a/config/chromeos_config.py b/config/chromeos_config.py
index 90a0f94..bfbb775 100644
--- a/config/chromeos_config.py
+++ b/config/chromeos_config.py
@@ -2846,11 +2846,11 @@
       schedule='triggered',
       triggered_gitiles=[[
           'https://chromium.googlesource.com/chromiumos/chromite',
-          ['refs/heads/master'],
+          ['refs/heads/main'],
           ['config/luci-scheduler.cfg']
       ], [
           'https://chrome-internal.googlesource.com/chromeos/infra/config',
-          ['refs/heads/master'],
+          ['refs/heads/main'],
           ['generated/luci-scheduler.cfg']
       ]],
   )
@@ -2974,10 +2974,10 @@
       schedule='triggered',
       triggered_gitiles=[[
           'https://chromium.googlesource.com/chromiumos/infra/lucifer',
-          ['refs/heads/master']
+          ['refs/heads/main']
       ], [
           'https://chromium.googlesource.com/chromiumos/infra/skylab_inventory',
-          ['refs/heads/master'],
+          ['refs/heads/main'],
       ]],
   )
 
diff --git a/config/chromeos_config_unittest.py b/config/chromeos_config_unittest.py
index a973944..c30ae24 100644
--- a/config/chromeos_config_unittest.py
+++ b/config/chromeos_config_unittest.py
@@ -977,7 +977,7 @@
                 self.assertIsInstance(path_regexp, str)
         except (TypeError, ValueError):
           self.fail(('%s has a triggered_gitiles that is malformed: %r\n'
-                     "Simple example: [['url', ['refs/heads/master']]]") %
+                     "Simple example: [['url', ['refs/heads/main']]]") %
                     (config.name, config.triggered_gitiles))
 
   def testNotificationConfigsType(self):
diff --git a/config/config_dump.json b/config/config_dump.json
index f55e956..3e7df80 100644
--- a/config/config_dump.json
+++ b/config/config_dump.json
@@ -8091,13 +8091,13 @@
             [
                 "https://chromium.googlesource.com/chromiumos/infra/lucifer",
                 [
-                    "refs/heads/master"
+                    "refs/heads/main"
                 ]
             ],
             [
                 "https://chromium.googlesource.com/chromiumos/infra/skylab_inventory",
                 [
-                    "refs/heads/master"
+                    "refs/heads/main"
                 ]
             ]
         ],
@@ -23325,7 +23325,7 @@
             [
                 "https://chromium.googlesource.com/chromiumos/chromite",
                 [
-                    "refs/heads/master"
+                    "refs/heads/main"
                 ],
                 [
                     "config/luci-scheduler.cfg"
@@ -23334,7 +23334,7 @@
             [
                 "https://chrome-internal.googlesource.com/chromeos/infra/config",
                 [
-                    "refs/heads/master"
+                    "refs/heads/main"
                 ],
                 [
                     "generated/luci-scheduler.cfg"
diff --git a/config/luci-scheduler.cfg b/config/luci-scheduler.cfg
index 8b1650c..c111190 100644
--- a/config/luci-scheduler.cfg
+++ b/config/luci-scheduler.cfg
@@ -35,7 +35,7 @@
   schedule: "with 5m interval"
   gitiles: {
     repo: "https://chrome-internal.googlesource.com/chromeos/infra/config"
-    refs: "refs/heads/master"
+    refs: "refs/heads/main"
     path_regexps: "generated/luci-scheduler.cfg"
   }
   triggers: "luci-scheduler-updater"
@@ -60,7 +60,7 @@
   schedule: "with 5m interval"
   gitiles: {
     repo: "https://chromium.googlesource.com/chromiumos/chromite"
-    refs: "refs/heads/master"
+    refs: "refs/heads/main"
     path_regexps: "config/luci-scheduler.cfg"
   }
   triggers: "luci-scheduler-updater"
@@ -73,7 +73,7 @@
   schedule: "with 5m interval"
   gitiles: {
     repo: "https://chromium.googlesource.com/chromiumos/infra/lucifer"
-    refs: "refs/heads/master"
+    refs: "refs/heads/main"
   }
   triggers: "chromeos-infra-go"
 }
@@ -85,7 +85,7 @@
   schedule: "with 5m interval"
   gitiles: {
     repo: "https://chromium.googlesource.com/chromiumos/infra/skylab_inventory"
-    refs: "refs/heads/master"
+    refs: "refs/heads/main"
   }
   triggers: "chromeos-infra-go"
 }