diff --git a/infra/config/global/generated/cr-buildbucket.cfg b/infra/config/global/generated/cr-buildbucket.cfg
index f55becc623..da1a4b9af4 100644
--- a/infra/config/global/generated/cr-buildbucket.cfg
+++ b/infra/config/global/generated/cr-buildbucket.cfg
@@ -28,7 +28,7 @@ buckets {
       service_account: "tint-ci-builder@chops-service-accounts.iam.gserviceaccount.com"
       experiments {
         key: "luci.use_realms"
-        value: 0
+        value: 20
       }
     }
     builders {
@@ -49,7 +49,7 @@ buckets {
       service_account: "tint-ci-builder@chops-service-accounts.iam.gserviceaccount.com"
       experiments {
         key: "luci.use_realms"
-        value: 0
+        value: 20
       }
     }
     builders {
@@ -70,7 +70,7 @@ buckets {
       service_account: "tint-ci-builder@chops-service-accounts.iam.gserviceaccount.com"
       experiments {
         key: "luci.use_realms"
-        value: 0
+        value: 20
       }
     }
     builders {
@@ -91,7 +91,7 @@ buckets {
       service_account: "tint-ci-builder@chops-service-accounts.iam.gserviceaccount.com"
       experiments {
         key: "luci.use_realms"
-        value: 0
+        value: 20
       }
     }
     builders {
@@ -117,7 +117,7 @@ buckets {
       service_account: "tint-ci-builder@chops-service-accounts.iam.gserviceaccount.com"
       experiments {
         key: "luci.use_realms"
-        value: 0
+        value: 20
       }
     }
     builders {
@@ -143,7 +143,7 @@ buckets {
       service_account: "tint-ci-builder@chops-service-accounts.iam.gserviceaccount.com"
       experiments {
         key: "luci.use_realms"
-        value: 0
+        value: 20
       }
     }
     builders {
@@ -168,7 +168,7 @@ buckets {
       service_account: "tint-ci-builder@chops-service-accounts.iam.gserviceaccount.com"
       experiments {
         key: "luci.use_realms"
-        value: 0
+        value: 20
       }
     }
     builders {
@@ -193,7 +193,7 @@ buckets {
       service_account: "tint-ci-builder@chops-service-accounts.iam.gserviceaccount.com"
       experiments {
         key: "luci.use_realms"
-        value: 0
+        value: 20
       }
     }
     builders {
@@ -218,7 +218,7 @@ buckets {
       service_account: "tint-ci-builder@chops-service-accounts.iam.gserviceaccount.com"
       experiments {
         key: "luci.use_realms"
-        value: 0
+        value: 20
       }
     }
     builders {
@@ -243,7 +243,7 @@ buckets {
       service_account: "tint-ci-builder@chops-service-accounts.iam.gserviceaccount.com"
       experiments {
         key: "luci.use_realms"
-        value: 0
+        value: 20
       }
     }
     builders {
@@ -263,7 +263,7 @@ buckets {
       service_account: "tint-ci-builder@chops-service-accounts.iam.gserviceaccount.com"
       experiments {
         key: "luci.use_realms"
-        value: 0
+        value: 20
       }
     }
     builders {
@@ -283,7 +283,7 @@ buckets {
       service_account: "tint-ci-builder@chops-service-accounts.iam.gserviceaccount.com"
       experiments {
         key: "luci.use_realms"
-        value: 0
+        value: 20
       }
     }
   }
@@ -321,7 +321,7 @@ buckets {
       service_account: "tint-try-builder@chops-service-accounts.iam.gserviceaccount.com"
       experiments {
         key: "luci.use_realms"
-        value: 0
+        value: 20
       }
     }
     builders {
@@ -343,7 +343,7 @@ buckets {
       service_account: "tint-try-builder@chops-service-accounts.iam.gserviceaccount.com"
       experiments {
         key: "luci.use_realms"
-        value: 0
+        value: 20
       }
     }
     builders {
@@ -365,7 +365,7 @@ buckets {
       service_account: "tint-try-builder@chops-service-accounts.iam.gserviceaccount.com"
       experiments {
         key: "luci.use_realms"
-        value: 0
+        value: 20
       }
     }
     builders {
@@ -387,7 +387,7 @@ buckets {
       service_account: "tint-try-builder@chops-service-accounts.iam.gserviceaccount.com"
       experiments {
         key: "luci.use_realms"
-        value: 0
+        value: 20
       }
     }
     builders {
@@ -414,7 +414,7 @@ buckets {
       service_account: "tint-try-builder@chops-service-accounts.iam.gserviceaccount.com"
       experiments {
         key: "luci.use_realms"
-        value: 0
+        value: 20
       }
     }
     builders {
@@ -441,7 +441,7 @@ buckets {
       service_account: "tint-try-builder@chops-service-accounts.iam.gserviceaccount.com"
       experiments {
         key: "luci.use_realms"
-        value: 0
+        value: 20
       }
     }
     builders {
@@ -461,7 +461,7 @@ buckets {
       service_account: "tint-try-builder@chops-service-accounts.iam.gserviceaccount.com"
       experiments {
         key: "luci.use_realms"
-        value: 0
+        value: 20
       }
     }
     builders {
@@ -487,7 +487,7 @@ buckets {
       service_account: "tint-try-builder@chops-service-accounts.iam.gserviceaccount.com"
       experiments {
         key: "luci.use_realms"
-        value: 0
+        value: 20
       }
     }
     builders {
@@ -513,7 +513,7 @@ buckets {
       service_account: "tint-try-builder@chops-service-accounts.iam.gserviceaccount.com"
       experiments {
         key: "luci.use_realms"
-        value: 0
+        value: 20
       }
     }
     builders {
@@ -539,7 +539,7 @@ buckets {
       service_account: "tint-try-builder@chops-service-accounts.iam.gserviceaccount.com"
       experiments {
         key: "luci.use_realms"
-        value: 0
+        value: 20
       }
     }
     builders {
@@ -565,7 +565,7 @@ buckets {
       service_account: "tint-try-builder@chops-service-accounts.iam.gserviceaccount.com"
       experiments {
         key: "luci.use_realms"
-        value: 0
+        value: 20
       }
     }
     builders {
@@ -586,7 +586,7 @@ buckets {
       service_account: "tint-try-builder@chops-service-accounts.iam.gserviceaccount.com"
       experiments {
         key: "luci.use_realms"
-        value: 0
+        value: 20
       }
     }
     builders {
@@ -607,7 +607,7 @@ buckets {
       service_account: "tint-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 e684771aa7..c575b565e9 100755
--- a/infra/config/global/main.star
+++ b/infra/config/global/main.star
@@ -11,7 +11,7 @@ main.star: lucicfg configuration for Tint's standalone builers.
 # 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)