diff --git a/infra/config/config.star b/infra/config/config.star
index 86400f094f..b001e9de9a 100755
--- a/infra/config/config.star
+++ b/infra/config/config.star
@@ -872,4 +872,6 @@ cron_builder(
         "config": lkgr_config,
     },
     schedule = "*/10 * * * *",  # Every 10 minutes.
+    # TODO(crbug.com/1393420): remove this.
+    experiments = {"luci.buildbucket.omit_python2": 0},
 )
diff --git a/infra/config/cr-buildbucket.cfg b/infra/config/cr-buildbucket.cfg
index eba8f78cda..9f6f84950e 100644
--- a/infra/config/cr-buildbucket.cfg
+++ b/infra/config/cr-buildbucket.cfg
@@ -1904,6 +1904,10 @@ buckets {
       execution_timeout_secs: 7200
       build_numbers: YES
       service_account: "chromium-webrtc-autoroll@webrtc-ci.iam.gserviceaccount.com"
+      experiments {
+        key: "luci.buildbucket.omit_python2"
+        value: 0
+      }
       experiments {
         key: "luci.recipes.use_python3"
         value: 100