diff --git a/infra/config/generated/realms.cfg b/infra/config/generated/realms.cfg
index b75c130..3ca8446 100644
--- a/infra/config/generated/realms.cfg
+++ b/infra/config/generated/realms.cfg
@@ -46,6 +46,7 @@
   }
   bindings {
     role: "role/buildbucket.creator"
+    principals: "group:mdb/chrome-build-access-sphinx"
     principals: "group:project-gn-committers"
   }
 }
@@ -73,6 +74,7 @@
   }
   bindings {
     role: "role/buildbucket.creator"
+    principals: "group:mdb/chrome-build-access-sphinx"
     principals: "group:project-gn-committers"
   }
 }
diff --git a/infra/config/main.star b/infra/config/main.star
index fae703a..9295373 100755
--- a/infra/config/main.star
+++ b/infra/config/main.star
@@ -102,6 +102,7 @@
             roles = "role/buildbucket.creator",
             groups = [
                 "project-gn-committers",
+                "mdb/chrome-build-access-sphinx",
             ],
         ),
     ],
@@ -177,6 +178,7 @@
             roles = "role/buildbucket.creator",
             groups = [
                 "project-gn-committers",
+                "mdb/chrome-build-access-sphinx",
             ],
         ),
     ],