diff --git a/infra/config/generated/cr-buildbucket.cfg b/infra/config/generated/cr-buildbucket.cfg
index ed3902b..9ddf93a 100644
--- a/infra/config/generated/cr-buildbucket.cfg
+++ b/infra/config/generated/cr-buildbucket.cfg
@@ -23,10 +23,6 @@
       }
       execution_timeout_secs: 3600
       service_account: "gn-ci-builder@chops-service-accounts.iam.gserviceaccount.com"
-      experiments {
-        key: "luci.recipes.use_python3"
-        value: 100
-      }
     }
     builders {
       name: "mac"
@@ -45,10 +41,6 @@
         path: "macos_sdk"
       }
       service_account: "gn-ci-builder@chops-service-accounts.iam.gserviceaccount.com"
-      experiments {
-        key: "luci.recipes.use_python3"
-        value: 100
-      }
     }
     builders {
       name: "win"
@@ -67,10 +59,6 @@
         path: "windows_sdk"
       }
       service_account: "gn-ci-builder@chops-service-accounts.iam.gserviceaccount.com"
-      experiments {
-        key: "luci.recipes.use_python3"
-        value: 100
-      }
     }
   }
   shadow: "ci.shadow"
@@ -113,10 +101,6 @@
       }
       execution_timeout_secs: 3600
       service_account: "gn-try-builder@chops-service-accounts.iam.gserviceaccount.com"
-      experiments {
-        key: "luci.recipes.use_python3"
-        value: 100
-      }
     }
     builders {
       name: "mac"
@@ -135,10 +119,6 @@
         path: "macos_sdk"
       }
       service_account: "gn-try-builder@chops-service-accounts.iam.gserviceaccount.com"
-      experiments {
-        key: "luci.recipes.use_python3"
-        value: 100
-      }
     }
     builders {
       name: "win"
@@ -157,10 +137,6 @@
         path: "windows_sdk"
       }
       service_account: "gn-try-builder@chops-service-accounts.iam.gserviceaccount.com"
-      experiments {
-        key: "luci.recipes.use_python3"
-        value: 100
-      }
     }
   }
   shadow: "try.shadow"
diff --git a/infra/config/main.star b/infra/config/main.star
index ddfaaf3..20b6651 100755
--- a/infra/config/main.star
+++ b/infra/config/main.star
@@ -55,9 +55,6 @@
         execution_timeout = 1 * time.hour,
         dimensions = {"cpu": "x86-64", "os": os, "pool": "luci.flex.%s" % bucket},
         triggered_by = triggered_by,
-        experiments = {
-            "luci.recipes.use_python3": 100,
-        },
     )
 
 luci.logdog(
diff --git a/infra/config/recipes.cfg b/infra/config/recipes.cfg
index 07b43ba..8c2c5c9 100644
--- a/infra/config/recipes.cfg
+++ b/infra/config/recipes.cfg
@@ -8,6 +8,5 @@
     }
   },
   "project_id": "gn",
-  "py3_only": true,
   "recipes_path": "infra"
 }