diff --git a/infra/config/global/generated/cr-buildbucket.cfg b/infra/config/global/generated/cr-buildbucket.cfg
index a21f1e2..1a5a97a 100644
--- a/infra/config/global/generated/cr-buildbucket.cfg
+++ b/infra/config/global/generated/cr-buildbucket.cfg
@@ -29,7 +29,7 @@
       service_account: "dawn-ci-builder@chops-service-accounts.iam.gserviceaccount.com"
       experiments {
         key: "luci.use_realms"
-        value: 0
+        value: 20
       }
     }
     builders {
@@ -50,7 +50,7 @@
       service_account: "dawn-ci-builder@chops-service-accounts.iam.gserviceaccount.com"
       experiments {
         key: "luci.use_realms"
-        value: 0
+        value: 20
       }
     }
     builders {
@@ -71,7 +71,7 @@
       service_account: "dawn-ci-builder@chops-service-accounts.iam.gserviceaccount.com"
       experiments {
         key: "luci.use_realms"
-        value: 0
+        value: 20
       }
     }
     builders {
@@ -92,7 +92,7 @@
       service_account: "dawn-ci-builder@chops-service-accounts.iam.gserviceaccount.com"
       experiments {
         key: "luci.use_realms"
-        value: 0
+        value: 20
       }
     }
     builders {
@@ -113,7 +113,7 @@
       service_account: "dawn-ci-builder@chops-service-accounts.iam.gserviceaccount.com"
       experiments {
         key: "luci.use_realms"
-        value: 0
+        value: 20
       }
     }
     builders {
@@ -138,7 +138,7 @@
       service_account: "dawn-ci-builder@chops-service-accounts.iam.gserviceaccount.com"
       experiments {
         key: "luci.use_realms"
-        value: 0
+        value: 20
       }
     }
     builders {
@@ -163,7 +163,7 @@
       service_account: "dawn-ci-builder@chops-service-accounts.iam.gserviceaccount.com"
       experiments {
         key: "luci.use_realms"
-        value: 0
+        value: 20
       }
     }
     builders {
@@ -188,7 +188,7 @@
       service_account: "dawn-ci-builder@chops-service-accounts.iam.gserviceaccount.com"
       experiments {
         key: "luci.use_realms"
-        value: 0
+        value: 20
       }
     }
     builders {
@@ -213,7 +213,7 @@
       service_account: "dawn-ci-builder@chops-service-accounts.iam.gserviceaccount.com"
       experiments {
         key: "luci.use_realms"
-        value: 0
+        value: 20
       }
     }
     builders {
@@ -238,7 +238,7 @@
       service_account: "dawn-ci-builder@chops-service-accounts.iam.gserviceaccount.com"
       experiments {
         key: "luci.use_realms"
-        value: 0
+        value: 20
       }
     }
     builders {
@@ -263,7 +263,7 @@
       service_account: "dawn-ci-builder@chops-service-accounts.iam.gserviceaccount.com"
       experiments {
         key: "luci.use_realms"
-        value: 0
+        value: 20
       }
     }
     builders {
@@ -283,7 +283,7 @@
       service_account: "dawn-ci-builder@chops-service-accounts.iam.gserviceaccount.com"
       experiments {
         key: "luci.use_realms"
-        value: 0
+        value: 20
       }
     }
     builders {
@@ -303,7 +303,7 @@
       service_account: "dawn-ci-builder@chops-service-accounts.iam.gserviceaccount.com"
       experiments {
         key: "luci.use_realms"
-        value: 0
+        value: 20
       }
     }
   }
@@ -341,7 +341,7 @@
       service_account: "dawn-try-builder@chops-service-accounts.iam.gserviceaccount.com"
       experiments {
         key: "luci.use_realms"
-        value: 0
+        value: 20
       }
     }
     builders {
@@ -363,7 +363,7 @@
       service_account: "dawn-try-builder@chops-service-accounts.iam.gserviceaccount.com"
       experiments {
         key: "luci.use_realms"
-        value: 0
+        value: 20
       }
     }
     builders {
@@ -385,7 +385,7 @@
       service_account: "dawn-try-builder@chops-service-accounts.iam.gserviceaccount.com"
       experiments {
         key: "luci.use_realms"
-        value: 0
+        value: 20
       }
     }
     builders {
@@ -407,7 +407,7 @@
       service_account: "dawn-try-builder@chops-service-accounts.iam.gserviceaccount.com"
       experiments {
         key: "luci.use_realms"
-        value: 0
+        value: 20
       }
     }
     builders {
@@ -433,7 +433,7 @@
       service_account: "dawn-try-builder@chops-service-accounts.iam.gserviceaccount.com"
       experiments {
         key: "luci.use_realms"
-        value: 0
+        value: 20
       }
     }
     builders {
@@ -459,7 +459,7 @@
       service_account: "dawn-try-builder@chops-service-accounts.iam.gserviceaccount.com"
       experiments {
         key: "luci.use_realms"
-        value: 0
+        value: 20
       }
     }
     builders {
@@ -479,7 +479,7 @@
       service_account: "dawn-try-builder@chops-service-accounts.iam.gserviceaccount.com"
       experiments {
         key: "luci.use_realms"
-        value: 0
+        value: 20
       }
     }
     builders {
@@ -505,7 +505,7 @@
       service_account: "dawn-try-builder@chops-service-accounts.iam.gserviceaccount.com"
       experiments {
         key: "luci.use_realms"
-        value: 0
+        value: 20
       }
     }
     builders {
@@ -531,7 +531,7 @@
       service_account: "dawn-try-builder@chops-service-accounts.iam.gserviceaccount.com"
       experiments {
         key: "luci.use_realms"
-        value: 0
+        value: 20
       }
     }
     builders {
@@ -557,7 +557,7 @@
       service_account: "dawn-try-builder@chops-service-accounts.iam.gserviceaccount.com"
       experiments {
         key: "luci.use_realms"
-        value: 0
+        value: 20
       }
     }
     builders {
@@ -583,7 +583,7 @@
       service_account: "dawn-try-builder@chops-service-accounts.iam.gserviceaccount.com"
       experiments {
         key: "luci.use_realms"
-        value: 0
+        value: 20
       }
     }
     builders {
@@ -604,7 +604,7 @@
       service_account: "dawn-try-builder@chops-service-accounts.iam.gserviceaccount.com"
       experiments {
         key: "luci.use_realms"
-        value: 0
+        value: 20
       }
     }
     builders {
@@ -625,7 +625,7 @@
       service_account: "dawn-try-builder@chops-service-accounts.iam.gserviceaccount.com"
       experiments {
         key: "luci.use_realms"
-        value: 0
+        value: 20
       }
     }
   }
diff --git a/infra/config/global/main.star b/infra/config/global/main.star
index bef2333..e37b92e 100755
--- a/infra/config/global/main.star
+++ b/infra/config/global/main.star
@@ -11,7 +11,7 @@
 # Enable realms experiment.
 lucicfg.enable_experiment("crbug.com/1085650")
 # TODO(https://crbug.com/1216166): ramp up to 100%.
-luci.builder.defaults.experiments.set({"luci.use_realms": 0})
+luci.builder.defaults.experiments.set({"luci.use_realms": 20})
 
 lucicfg.config(fail_on_warnings = True)