diff --git a/.buildkite/nightly.steps.yaml b/.buildkite/nightly.steps.yaml
index dcdb805..73cfc75 100644
--- a/.buildkite/nightly.steps.yaml
+++ b/.buildkite/nightly.steps.yaml
@@ -16,6 +16,7 @@ common: &common
     - "environment=production"
     - "permission_set=builder"
     - "platform=linux"
+    - "scaler_version=2"
     - "queue=${CI_BUILDER_QUEUE:-v3-1558960120-4a170e85e982b36f-------z}"
   timeout_in_minutes: 60 # TODO(ENG-548): reduce timeout once agent-cold-start is optimised.
   retry:
diff --git a/.buildkite/premerge.steps.yaml b/.buildkite/premerge.steps.yaml
index e055281..ab2cb22 100644
--- a/.buildkite/premerge.steps.yaml
+++ b/.buildkite/premerge.steps.yaml
@@ -16,6 +16,7 @@ common: &common
     - "environment=production"
     - "permission_set=builder"
     - "platform=linux"
+    - "scaler_version=2"
     - "queue=${CI_BUILDER_QUEUE:-v3-1558960120-4a170e85e982b36f-------z}"
   timeout_in_minutes: 60 # TODO(ENG-548): reduce timeout once agent-cold-start is optimised.
   retry: